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654 lines
16 KiB
654 lines
16 KiB
// SPDX-License-Identifier: BSD-3-Clause |
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/* |
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* linux/net/sunrpc/gss_krb5_mech.c |
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* |
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* Copyright (c) 2001-2008 The Regents of the University of Michigan. |
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* All rights reserved. |
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* |
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* Andy Adamson <[email protected]> |
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* J. Bruce Fields <[email protected]> |
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*/ |
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|
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#include <crypto/hash.h> |
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#include <crypto/skcipher.h> |
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#include <linux/err.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/sunrpc/auth.h> |
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#include <linux/sunrpc/gss_krb5.h> |
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#include <linux/sunrpc/xdr.h> |
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#include <linux/sunrpc/gss_krb5_enctypes.h> |
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#include "auth_gss_internal.h" |
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|
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#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) |
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# define RPCDBG_FACILITY RPCDBG_AUTH |
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#endif |
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static struct gss_api_mech gss_kerberos_mech; /* forward declaration */ |
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static const struct gss_krb5_enctype supported_gss_krb5_enctypes[] = { |
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#ifndef CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES |
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/* |
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* DES (All DES enctypes are mapped to the same gss functionality) |
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*/ |
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{ |
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.etype = ENCTYPE_DES_CBC_RAW, |
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.ctype = CKSUMTYPE_RSA_MD5, |
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.name = "des-cbc-crc", |
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.encrypt_name = "cbc(des)", |
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.cksum_name = "md5", |
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.encrypt = krb5_encrypt, |
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.decrypt = krb5_decrypt, |
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.mk_key = NULL, |
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.signalg = SGN_ALG_DES_MAC_MD5, |
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.sealalg = SEAL_ALG_DES, |
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.keybytes = 7, |
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.keylength = 8, |
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.blocksize = 8, |
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.conflen = 8, |
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.cksumlength = 8, |
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.keyed_cksum = 0, |
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}, |
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#endif /* CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES */ |
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/* |
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* 3DES |
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*/ |
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{ |
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.etype = ENCTYPE_DES3_CBC_RAW, |
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.ctype = CKSUMTYPE_HMAC_SHA1_DES3, |
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.name = "des3-hmac-sha1", |
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.encrypt_name = "cbc(des3_ede)", |
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.cksum_name = "hmac(sha1)", |
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.encrypt = krb5_encrypt, |
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.decrypt = krb5_decrypt, |
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.mk_key = gss_krb5_des3_make_key, |
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.signalg = SGN_ALG_HMAC_SHA1_DES3_KD, |
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.sealalg = SEAL_ALG_DES3KD, |
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.keybytes = 21, |
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.keylength = 24, |
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.blocksize = 8, |
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.conflen = 8, |
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.cksumlength = 20, |
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.keyed_cksum = 1, |
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}, |
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/* |
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* AES128 |
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*/ |
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{ |
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.etype = ENCTYPE_AES128_CTS_HMAC_SHA1_96, |
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.ctype = CKSUMTYPE_HMAC_SHA1_96_AES128, |
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.name = "aes128-cts", |
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.encrypt_name = "cts(cbc(aes))", |
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.cksum_name = "hmac(sha1)", |
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.encrypt = krb5_encrypt, |
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.decrypt = krb5_decrypt, |
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.mk_key = gss_krb5_aes_make_key, |
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.encrypt_v2 = gss_krb5_aes_encrypt, |
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.decrypt_v2 = gss_krb5_aes_decrypt, |
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.signalg = -1, |
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.sealalg = -1, |
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.keybytes = 16, |
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.keylength = 16, |
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.blocksize = 16, |
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.conflen = 16, |
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.cksumlength = 12, |
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.keyed_cksum = 1, |
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}, |
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/* |
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* AES256 |
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*/ |
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{ |
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.etype = ENCTYPE_AES256_CTS_HMAC_SHA1_96, |
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.ctype = CKSUMTYPE_HMAC_SHA1_96_AES256, |
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.name = "aes256-cts", |
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.encrypt_name = "cts(cbc(aes))", |
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.cksum_name = "hmac(sha1)", |
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.encrypt = krb5_encrypt, |
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.decrypt = krb5_decrypt, |
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.mk_key = gss_krb5_aes_make_key, |
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.encrypt_v2 = gss_krb5_aes_encrypt, |
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.decrypt_v2 = gss_krb5_aes_decrypt, |
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.signalg = -1, |
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.sealalg = -1, |
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.keybytes = 32, |
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.keylength = 32, |
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.blocksize = 16, |
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.conflen = 16, |
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.cksumlength = 12, |
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.keyed_cksum = 1, |
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}, |
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}; |
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static const int num_supported_enctypes = |
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ARRAY_SIZE(supported_gss_krb5_enctypes); |
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|
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static int |
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supported_gss_krb5_enctype(int etype) |
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{ |
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int i; |
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for (i = 0; i < num_supported_enctypes; i++) |
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if (supported_gss_krb5_enctypes[i].etype == etype) |
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return 1; |
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return 0; |
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} |
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static const struct gss_krb5_enctype * |
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get_gss_krb5_enctype(int etype) |
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{ |
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int i; |
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for (i = 0; i < num_supported_enctypes; i++) |
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if (supported_gss_krb5_enctypes[i].etype == etype) |
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return &supported_gss_krb5_enctypes[i]; |
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return NULL; |
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} |
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static inline const void * |
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get_key(const void *p, const void *end, |
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struct krb5_ctx *ctx, struct crypto_sync_skcipher **res) |
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{ |
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struct xdr_netobj key; |
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int alg; |
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p = simple_get_bytes(p, end, &alg, sizeof(alg)); |
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if (IS_ERR(p)) |
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goto out_err; |
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switch (alg) { |
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case ENCTYPE_DES_CBC_CRC: |
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case ENCTYPE_DES_CBC_MD4: |
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case ENCTYPE_DES_CBC_MD5: |
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/* Map all these key types to ENCTYPE_DES_CBC_RAW */ |
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alg = ENCTYPE_DES_CBC_RAW; |
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break; |
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} |
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if (!supported_gss_krb5_enctype(alg)) { |
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printk(KERN_WARNING "gss_kerberos_mech: unsupported " |
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"encryption key algorithm %d\n", alg); |
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p = ERR_PTR(-EINVAL); |
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goto out_err; |
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} |
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p = simple_get_netobj(p, end, &key); |
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if (IS_ERR(p)) |
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goto out_err; |
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*res = crypto_alloc_sync_skcipher(ctx->gk5e->encrypt_name, 0, 0); |
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if (IS_ERR(*res)) { |
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printk(KERN_WARNING "gss_kerberos_mech: unable to initialize " |
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"crypto algorithm %s\n", ctx->gk5e->encrypt_name); |
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*res = NULL; |
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goto out_err_free_key; |
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} |
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if (crypto_sync_skcipher_setkey(*res, key.data, key.len)) { |
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printk(KERN_WARNING "gss_kerberos_mech: error setting key for " |
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"crypto algorithm %s\n", ctx->gk5e->encrypt_name); |
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goto out_err_free_tfm; |
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} |
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kfree(key.data); |
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return p; |
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out_err_free_tfm: |
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crypto_free_sync_skcipher(*res); |
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out_err_free_key: |
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kfree(key.data); |
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p = ERR_PTR(-EINVAL); |
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out_err: |
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return p; |
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} |
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static int |
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gss_import_v1_context(const void *p, const void *end, struct krb5_ctx *ctx) |
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{ |
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u32 seq_send; |
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int tmp; |
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u32 time32; |
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p = simple_get_bytes(p, end, &ctx->initiate, sizeof(ctx->initiate)); |
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if (IS_ERR(p)) |
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goto out_err; |
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/* Old format supports only DES! Any other enctype uses new format */ |
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ctx->enctype = ENCTYPE_DES_CBC_RAW; |
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ctx->gk5e = get_gss_krb5_enctype(ctx->enctype); |
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if (ctx->gk5e == NULL) { |
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p = ERR_PTR(-EINVAL); |
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goto out_err; |
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} |
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|
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/* The downcall format was designed before we completely understood |
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* the uses of the context fields; so it includes some stuff we |
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* just give some minimal sanity-checking, and some we ignore |
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* completely (like the next twenty bytes): */ |
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if (unlikely(p + 20 > end || p + 20 < p)) { |
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p = ERR_PTR(-EFAULT); |
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goto out_err; |
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} |
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p += 20; |
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p = simple_get_bytes(p, end, &tmp, sizeof(tmp)); |
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if (IS_ERR(p)) |
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goto out_err; |
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if (tmp != SGN_ALG_DES_MAC_MD5) { |
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p = ERR_PTR(-ENOSYS); |
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goto out_err; |
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} |
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p = simple_get_bytes(p, end, &tmp, sizeof(tmp)); |
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if (IS_ERR(p)) |
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goto out_err; |
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if (tmp != SEAL_ALG_DES) { |
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p = ERR_PTR(-ENOSYS); |
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goto out_err; |
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} |
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p = simple_get_bytes(p, end, &time32, sizeof(time32)); |
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if (IS_ERR(p)) |
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goto out_err; |
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/* unsigned 32-bit time overflows in year 2106 */ |
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ctx->endtime = (time64_t)time32; |
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p = simple_get_bytes(p, end, &seq_send, sizeof(seq_send)); |
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if (IS_ERR(p)) |
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goto out_err; |
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atomic_set(&ctx->seq_send, seq_send); |
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p = simple_get_netobj(p, end, &ctx->mech_used); |
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if (IS_ERR(p)) |
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goto out_err; |
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p = get_key(p, end, ctx, &ctx->enc); |
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if (IS_ERR(p)) |
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goto out_err_free_mech; |
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p = get_key(p, end, ctx, &ctx->seq); |
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if (IS_ERR(p)) |
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goto out_err_free_key1; |
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if (p != end) { |
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p = ERR_PTR(-EFAULT); |
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goto out_err_free_key2; |
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} |
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return 0; |
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out_err_free_key2: |
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crypto_free_sync_skcipher(ctx->seq); |
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out_err_free_key1: |
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crypto_free_sync_skcipher(ctx->enc); |
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out_err_free_mech: |
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kfree(ctx->mech_used.data); |
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out_err: |
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return PTR_ERR(p); |
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} |
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static struct crypto_sync_skcipher * |
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context_v2_alloc_cipher(struct krb5_ctx *ctx, const char *cname, u8 *key) |
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{ |
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struct crypto_sync_skcipher *cp; |
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cp = crypto_alloc_sync_skcipher(cname, 0, 0); |
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if (IS_ERR(cp)) { |
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dprintk("gss_kerberos_mech: unable to initialize " |
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"crypto algorithm %s\n", cname); |
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return NULL; |
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} |
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if (crypto_sync_skcipher_setkey(cp, key, ctx->gk5e->keylength)) { |
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dprintk("gss_kerberos_mech: error setting key for " |
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"crypto algorithm %s\n", cname); |
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crypto_free_sync_skcipher(cp); |
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return NULL; |
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} |
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return cp; |
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} |
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static inline void |
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set_cdata(u8 cdata[GSS_KRB5_K5CLENGTH], u32 usage, u8 seed) |
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{ |
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cdata[0] = (usage>>24)&0xff; |
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cdata[1] = (usage>>16)&0xff; |
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cdata[2] = (usage>>8)&0xff; |
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cdata[3] = usage&0xff; |
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cdata[4] = seed; |
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} |
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static int |
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context_derive_keys_des3(struct krb5_ctx *ctx, gfp_t gfp_mask) |
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{ |
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struct xdr_netobj c, keyin, keyout; |
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u8 cdata[GSS_KRB5_K5CLENGTH]; |
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u32 err; |
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c.len = GSS_KRB5_K5CLENGTH; |
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c.data = cdata; |
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keyin.data = ctx->Ksess; |
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keyin.len = ctx->gk5e->keylength; |
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keyout.len = ctx->gk5e->keylength; |
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|
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/* seq uses the raw key */ |
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ctx->seq = context_v2_alloc_cipher(ctx, ctx->gk5e->encrypt_name, |
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ctx->Ksess); |
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if (ctx->seq == NULL) |
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goto out_err; |
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ctx->enc = context_v2_alloc_cipher(ctx, ctx->gk5e->encrypt_name, |
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ctx->Ksess); |
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if (ctx->enc == NULL) |
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goto out_free_seq; |
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|
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/* derive cksum */ |
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set_cdata(cdata, KG_USAGE_SIGN, KEY_USAGE_SEED_CHECKSUM); |
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keyout.data = ctx->cksum; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving cksum key\n", |
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__func__, err); |
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goto out_free_enc; |
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} |
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return 0; |
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out_free_enc: |
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crypto_free_sync_skcipher(ctx->enc); |
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out_free_seq: |
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crypto_free_sync_skcipher(ctx->seq); |
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out_err: |
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return -EINVAL; |
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} |
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static int |
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context_derive_keys_new(struct krb5_ctx *ctx, gfp_t gfp_mask) |
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{ |
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struct xdr_netobj c, keyin, keyout; |
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u8 cdata[GSS_KRB5_K5CLENGTH]; |
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u32 err; |
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c.len = GSS_KRB5_K5CLENGTH; |
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c.data = cdata; |
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keyin.data = ctx->Ksess; |
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keyin.len = ctx->gk5e->keylength; |
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keyout.len = ctx->gk5e->keylength; |
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|
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/* initiator seal encryption */ |
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set_cdata(cdata, KG_USAGE_INITIATOR_SEAL, KEY_USAGE_SEED_ENCRYPTION); |
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keyout.data = ctx->initiator_seal; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving initiator_seal key\n", |
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__func__, err); |
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goto out_err; |
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} |
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ctx->initiator_enc = context_v2_alloc_cipher(ctx, |
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ctx->gk5e->encrypt_name, |
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ctx->initiator_seal); |
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if (ctx->initiator_enc == NULL) |
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goto out_err; |
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|
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/* acceptor seal encryption */ |
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set_cdata(cdata, KG_USAGE_ACCEPTOR_SEAL, KEY_USAGE_SEED_ENCRYPTION); |
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keyout.data = ctx->acceptor_seal; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving acceptor_seal key\n", |
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__func__, err); |
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goto out_free_initiator_enc; |
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} |
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ctx->acceptor_enc = context_v2_alloc_cipher(ctx, |
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ctx->gk5e->encrypt_name, |
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ctx->acceptor_seal); |
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if (ctx->acceptor_enc == NULL) |
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goto out_free_initiator_enc; |
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|
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/* initiator sign checksum */ |
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set_cdata(cdata, KG_USAGE_INITIATOR_SIGN, KEY_USAGE_SEED_CHECKSUM); |
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keyout.data = ctx->initiator_sign; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving initiator_sign key\n", |
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__func__, err); |
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goto out_free_acceptor_enc; |
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} |
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|
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/* acceptor sign checksum */ |
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set_cdata(cdata, KG_USAGE_ACCEPTOR_SIGN, KEY_USAGE_SEED_CHECKSUM); |
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keyout.data = ctx->acceptor_sign; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving acceptor_sign key\n", |
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__func__, err); |
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goto out_free_acceptor_enc; |
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} |
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|
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/* initiator seal integrity */ |
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set_cdata(cdata, KG_USAGE_INITIATOR_SEAL, KEY_USAGE_SEED_INTEGRITY); |
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keyout.data = ctx->initiator_integ; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving initiator_integ key\n", |
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__func__, err); |
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goto out_free_acceptor_enc; |
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} |
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|
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/* acceptor seal integrity */ |
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set_cdata(cdata, KG_USAGE_ACCEPTOR_SEAL, KEY_USAGE_SEED_INTEGRITY); |
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keyout.data = ctx->acceptor_integ; |
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err = krb5_derive_key(ctx->gk5e, &keyin, &keyout, &c, gfp_mask); |
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if (err) { |
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dprintk("%s: Error %d deriving acceptor_integ key\n", |
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__func__, err); |
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goto out_free_acceptor_enc; |
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} |
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|
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switch (ctx->enctype) { |
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case ENCTYPE_AES128_CTS_HMAC_SHA1_96: |
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case ENCTYPE_AES256_CTS_HMAC_SHA1_96: |
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ctx->initiator_enc_aux = |
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context_v2_alloc_cipher(ctx, "cbc(aes)", |
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ctx->initiator_seal); |
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if (ctx->initiator_enc_aux == NULL) |
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goto out_free_acceptor_enc; |
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ctx->acceptor_enc_aux = |
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context_v2_alloc_cipher(ctx, "cbc(aes)", |
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ctx->acceptor_seal); |
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if (ctx->acceptor_enc_aux == NULL) { |
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crypto_free_sync_skcipher(ctx->initiator_enc_aux); |
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goto out_free_acceptor_enc; |
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} |
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} |
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|
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return 0; |
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|
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out_free_acceptor_enc: |
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crypto_free_sync_skcipher(ctx->acceptor_enc); |
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out_free_initiator_enc: |
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crypto_free_sync_skcipher(ctx->initiator_enc); |
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out_err: |
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return -EINVAL; |
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} |
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|
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static int |
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gss_import_v2_context(const void *p, const void *end, struct krb5_ctx *ctx, |
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gfp_t gfp_mask) |
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{ |
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u64 seq_send64; |
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int keylen; |
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u32 time32; |
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|
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p = simple_get_bytes(p, end, &ctx->flags, sizeof(ctx->flags)); |
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if (IS_ERR(p)) |
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goto out_err; |
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ctx->initiate = ctx->flags & KRB5_CTX_FLAG_INITIATOR; |
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|
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p = simple_get_bytes(p, end, &time32, sizeof(time32)); |
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if (IS_ERR(p)) |
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goto out_err; |
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/* unsigned 32-bit time overflows in year 2106 */ |
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ctx->endtime = (time64_t)time32; |
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p = simple_get_bytes(p, end, &seq_send64, sizeof(seq_send64)); |
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if (IS_ERR(p)) |
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goto out_err; |
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atomic64_set(&ctx->seq_send64, seq_send64); |
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/* set seq_send for use by "older" enctypes */ |
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atomic_set(&ctx->seq_send, seq_send64); |
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if (seq_send64 != atomic_read(&ctx->seq_send)) { |
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dprintk("%s: seq_send64 %llx, seq_send %x overflow?\n", __func__, |
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seq_send64, atomic_read(&ctx->seq_send)); |
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p = ERR_PTR(-EINVAL); |
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goto out_err; |
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} |
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p = simple_get_bytes(p, end, &ctx->enctype, sizeof(ctx->enctype)); |
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if (IS_ERR(p)) |
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goto out_err; |
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/* Map ENCTYPE_DES3_CBC_SHA1 to ENCTYPE_DES3_CBC_RAW */ |
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if (ctx->enctype == ENCTYPE_DES3_CBC_SHA1) |
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ctx->enctype = ENCTYPE_DES3_CBC_RAW; |
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ctx->gk5e = get_gss_krb5_enctype(ctx->enctype); |
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if (ctx->gk5e == NULL) { |
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dprintk("gss_kerberos_mech: unsupported krb5 enctype %u\n", |
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ctx->enctype); |
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p = ERR_PTR(-EINVAL); |
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goto out_err; |
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} |
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keylen = ctx->gk5e->keylength; |
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|
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p = simple_get_bytes(p, end, ctx->Ksess, keylen); |
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if (IS_ERR(p)) |
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goto out_err; |
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|
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if (p != end) { |
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p = ERR_PTR(-EINVAL); |
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goto out_err; |
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} |
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|
|
ctx->mech_used.data = kmemdup(gss_kerberos_mech.gm_oid.data, |
|
gss_kerberos_mech.gm_oid.len, gfp_mask); |
|
if (unlikely(ctx->mech_used.data == NULL)) { |
|
p = ERR_PTR(-ENOMEM); |
|
goto out_err; |
|
} |
|
ctx->mech_used.len = gss_kerberos_mech.gm_oid.len; |
|
|
|
switch (ctx->enctype) { |
|
case ENCTYPE_DES3_CBC_RAW: |
|
return context_derive_keys_des3(ctx, gfp_mask); |
|
case ENCTYPE_AES128_CTS_HMAC_SHA1_96: |
|
case ENCTYPE_AES256_CTS_HMAC_SHA1_96: |
|
return context_derive_keys_new(ctx, gfp_mask); |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
out_err: |
|
return PTR_ERR(p); |
|
} |
|
|
|
static int |
|
gss_import_sec_context_kerberos(const void *p, size_t len, |
|
struct gss_ctx *ctx_id, |
|
time64_t *endtime, |
|
gfp_t gfp_mask) |
|
{ |
|
const void *end = (const void *)((const char *)p + len); |
|
struct krb5_ctx *ctx; |
|
int ret; |
|
|
|
ctx = kzalloc(sizeof(*ctx), gfp_mask); |
|
if (ctx == NULL) |
|
return -ENOMEM; |
|
|
|
if (len == 85) |
|
ret = gss_import_v1_context(p, end, ctx); |
|
else |
|
ret = gss_import_v2_context(p, end, ctx, gfp_mask); |
|
|
|
if (ret == 0) { |
|
ctx_id->internal_ctx_id = ctx; |
|
if (endtime) |
|
*endtime = ctx->endtime; |
|
} else |
|
kfree(ctx); |
|
|
|
dprintk("RPC: %s: returning %d\n", __func__, ret); |
|
return ret; |
|
} |
|
|
|
static void |
|
gss_delete_sec_context_kerberos(void *internal_ctx) { |
|
struct krb5_ctx *kctx = internal_ctx; |
|
|
|
crypto_free_sync_skcipher(kctx->seq); |
|
crypto_free_sync_skcipher(kctx->enc); |
|
crypto_free_sync_skcipher(kctx->acceptor_enc); |
|
crypto_free_sync_skcipher(kctx->initiator_enc); |
|
crypto_free_sync_skcipher(kctx->acceptor_enc_aux); |
|
crypto_free_sync_skcipher(kctx->initiator_enc_aux); |
|
kfree(kctx->mech_used.data); |
|
kfree(kctx); |
|
} |
|
|
|
static const struct gss_api_ops gss_kerberos_ops = { |
|
.gss_import_sec_context = gss_import_sec_context_kerberos, |
|
.gss_get_mic = gss_get_mic_kerberos, |
|
.gss_verify_mic = gss_verify_mic_kerberos, |
|
.gss_wrap = gss_wrap_kerberos, |
|
.gss_unwrap = gss_unwrap_kerberos, |
|
.gss_delete_sec_context = gss_delete_sec_context_kerberos, |
|
}; |
|
|
|
static struct pf_desc gss_kerberos_pfs[] = { |
|
[0] = { |
|
.pseudoflavor = RPC_AUTH_GSS_KRB5, |
|
.qop = GSS_C_QOP_DEFAULT, |
|
.service = RPC_GSS_SVC_NONE, |
|
.name = "krb5", |
|
}, |
|
[1] = { |
|
.pseudoflavor = RPC_AUTH_GSS_KRB5I, |
|
.qop = GSS_C_QOP_DEFAULT, |
|
.service = RPC_GSS_SVC_INTEGRITY, |
|
.name = "krb5i", |
|
.datatouch = true, |
|
}, |
|
[2] = { |
|
.pseudoflavor = RPC_AUTH_GSS_KRB5P, |
|
.qop = GSS_C_QOP_DEFAULT, |
|
.service = RPC_GSS_SVC_PRIVACY, |
|
.name = "krb5p", |
|
.datatouch = true, |
|
}, |
|
}; |
|
|
|
MODULE_ALIAS("rpc-auth-gss-krb5"); |
|
MODULE_ALIAS("rpc-auth-gss-krb5i"); |
|
MODULE_ALIAS("rpc-auth-gss-krb5p"); |
|
MODULE_ALIAS("rpc-auth-gss-390003"); |
|
MODULE_ALIAS("rpc-auth-gss-390004"); |
|
MODULE_ALIAS("rpc-auth-gss-390005"); |
|
MODULE_ALIAS("rpc-auth-gss-1.2.840.113554.1.2.2"); |
|
|
|
static struct gss_api_mech gss_kerberos_mech = { |
|
.gm_name = "krb5", |
|
.gm_owner = THIS_MODULE, |
|
.gm_oid = { 9, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" }, |
|
.gm_ops = &gss_kerberos_ops, |
|
.gm_pf_num = ARRAY_SIZE(gss_kerberos_pfs), |
|
.gm_pfs = gss_kerberos_pfs, |
|
.gm_upcall_enctypes = KRB5_SUPPORTED_ENCTYPES, |
|
}; |
|
|
|
static int __init init_kerberos_module(void) |
|
{ |
|
int status; |
|
|
|
status = gss_mech_register(&gss_kerberos_mech); |
|
if (status) |
|
printk("Failed to register kerberos gss mechanism!\n"); |
|
return status; |
|
} |
|
|
|
static void __exit cleanup_kerberos_module(void) |
|
{ |
|
gss_mech_unregister(&gss_kerberos_mech); |
|
} |
|
|
|
MODULE_LICENSE("GPL"); |
|
module_init(init_kerberos_module); |
|
module_exit(cleanup_kerberos_module);
|
|
|