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685 lines
17 KiB
685 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* RSA padding templates. |
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* |
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* Copyright (c) 2015 Intel Corporation |
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*/ |
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|
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#include <crypto/algapi.h> |
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#include <crypto/akcipher.h> |
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#include <crypto/internal/akcipher.h> |
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#include <crypto/internal/rsa.h> |
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#include <linux/err.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/random.h> |
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#include <linux/scatterlist.h> |
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|
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/* |
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* Hash algorithm OIDs plus ASN.1 DER wrappings [RFC4880 sec 5.2.2]. |
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*/ |
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static const u8 rsa_digest_info_md5[] = { |
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0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, |
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0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05, /* OID */ |
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0x05, 0x00, 0x04, 0x10 |
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}; |
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static const u8 rsa_digest_info_sha1[] = { |
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0x30, 0x21, 0x30, 0x09, 0x06, 0x05, |
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0x2b, 0x0e, 0x03, 0x02, 0x1a, |
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0x05, 0x00, 0x04, 0x14 |
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}; |
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static const u8 rsa_digest_info_rmd160[] = { |
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0x30, 0x21, 0x30, 0x09, 0x06, 0x05, |
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0x2b, 0x24, 0x03, 0x02, 0x01, |
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0x05, 0x00, 0x04, 0x14 |
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}; |
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static const u8 rsa_digest_info_sha224[] = { |
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0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, |
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0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, |
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0x05, 0x00, 0x04, 0x1c |
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}; |
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static const u8 rsa_digest_info_sha256[] = { |
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0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, |
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0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, |
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0x05, 0x00, 0x04, 0x20 |
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}; |
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static const u8 rsa_digest_info_sha384[] = { |
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0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, |
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0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, |
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0x05, 0x00, 0x04, 0x30 |
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}; |
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static const u8 rsa_digest_info_sha512[] = { |
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0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, |
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0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, |
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0x05, 0x00, 0x04, 0x40 |
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}; |
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static const struct rsa_asn1_template { |
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const char *name; |
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const u8 *data; |
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size_t size; |
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} rsa_asn1_templates[] = { |
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#define _(X) { #X, rsa_digest_info_##X, sizeof(rsa_digest_info_##X) } |
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_(md5), |
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_(sha1), |
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_(rmd160), |
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_(sha256), |
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_(sha384), |
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_(sha512), |
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_(sha224), |
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{ NULL } |
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#undef _ |
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}; |
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static const struct rsa_asn1_template *rsa_lookup_asn1(const char *name) |
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{ |
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const struct rsa_asn1_template *p; |
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for (p = rsa_asn1_templates; p->name; p++) |
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if (strcmp(name, p->name) == 0) |
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return p; |
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return NULL; |
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} |
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struct pkcs1pad_ctx { |
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struct crypto_akcipher *child; |
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unsigned int key_size; |
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}; |
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struct pkcs1pad_inst_ctx { |
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struct crypto_akcipher_spawn spawn; |
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const struct rsa_asn1_template *digest_info; |
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}; |
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struct pkcs1pad_request { |
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struct scatterlist in_sg[2], out_sg[1]; |
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uint8_t *in_buf, *out_buf; |
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struct akcipher_request child_req; |
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}; |
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static int pkcs1pad_set_pub_key(struct crypto_akcipher *tfm, const void *key, |
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unsigned int keylen) |
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{ |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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int err; |
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ctx->key_size = 0; |
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err = crypto_akcipher_set_pub_key(ctx->child, key, keylen); |
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if (err) |
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return err; |
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/* Find out new modulus size from rsa implementation */ |
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err = crypto_akcipher_maxsize(ctx->child); |
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if (err > PAGE_SIZE) |
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return -ENOTSUPP; |
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ctx->key_size = err; |
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return 0; |
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} |
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static int pkcs1pad_set_priv_key(struct crypto_akcipher *tfm, const void *key, |
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unsigned int keylen) |
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{ |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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int err; |
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ctx->key_size = 0; |
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err = crypto_akcipher_set_priv_key(ctx->child, key, keylen); |
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if (err) |
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return err; |
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/* Find out new modulus size from rsa implementation */ |
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err = crypto_akcipher_maxsize(ctx->child); |
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if (err > PAGE_SIZE) |
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return -ENOTSUPP; |
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ctx->key_size = err; |
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return 0; |
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} |
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static unsigned int pkcs1pad_get_max_size(struct crypto_akcipher *tfm) |
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{ |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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|
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/* |
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* The maximum destination buffer size for the encrypt/sign operations |
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* will be the same as for RSA, even though it's smaller for |
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* decrypt/verify. |
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*/ |
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return ctx->key_size; |
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} |
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static void pkcs1pad_sg_set_buf(struct scatterlist *sg, void *buf, size_t len, |
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struct scatterlist *next) |
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{ |
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int nsegs = next ? 2 : 1; |
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sg_init_table(sg, nsegs); |
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sg_set_buf(sg, buf, len); |
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if (next) |
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sg_chain(sg, nsegs, next); |
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} |
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static int pkcs1pad_encrypt_sign_complete(struct akcipher_request *req, int err) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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unsigned int pad_len; |
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unsigned int len; |
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u8 *out_buf; |
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if (err) |
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goto out; |
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len = req_ctx->child_req.dst_len; |
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pad_len = ctx->key_size - len; |
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/* Four billion to one */ |
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if (likely(!pad_len)) |
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goto out; |
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out_buf = kzalloc(ctx->key_size, GFP_KERNEL); |
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err = -ENOMEM; |
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if (!out_buf) |
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goto out; |
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sg_copy_to_buffer(req->dst, sg_nents_for_len(req->dst, len), |
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out_buf + pad_len, len); |
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sg_copy_from_buffer(req->dst, |
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sg_nents_for_len(req->dst, ctx->key_size), |
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out_buf, ctx->key_size); |
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kfree_sensitive(out_buf); |
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out: |
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req->dst_len = ctx->key_size; |
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kfree(req_ctx->in_buf); |
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return err; |
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} |
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static void pkcs1pad_encrypt_sign_complete_cb( |
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struct crypto_async_request *child_async_req, int err) |
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{ |
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struct akcipher_request *req = child_async_req->data; |
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struct crypto_async_request async_req; |
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if (err == -EINPROGRESS) |
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return; |
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async_req.data = req->base.data; |
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async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); |
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async_req.flags = child_async_req->flags; |
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req->base.complete(&async_req, |
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pkcs1pad_encrypt_sign_complete(req, err)); |
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} |
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static int pkcs1pad_encrypt(struct akcipher_request *req) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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int err; |
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unsigned int i, ps_end; |
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if (!ctx->key_size) |
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return -EINVAL; |
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if (req->src_len > ctx->key_size - 11) |
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return -EOVERFLOW; |
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if (req->dst_len < ctx->key_size) { |
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req->dst_len = ctx->key_size; |
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return -EOVERFLOW; |
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} |
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req_ctx->in_buf = kmalloc(ctx->key_size - 1 - req->src_len, |
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GFP_KERNEL); |
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if (!req_ctx->in_buf) |
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return -ENOMEM; |
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ps_end = ctx->key_size - req->src_len - 2; |
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req_ctx->in_buf[0] = 0x02; |
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for (i = 1; i < ps_end; i++) |
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req_ctx->in_buf[i] = 1 + prandom_u32_max(255); |
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req_ctx->in_buf[ps_end] = 0x00; |
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pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf, |
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ctx->key_size - 1 - req->src_len, req->src); |
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akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); |
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akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, |
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pkcs1pad_encrypt_sign_complete_cb, req); |
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/* Reuse output buffer */ |
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akcipher_request_set_crypt(&req_ctx->child_req, req_ctx->in_sg, |
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req->dst, ctx->key_size - 1, req->dst_len); |
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err = crypto_akcipher_encrypt(&req_ctx->child_req); |
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if (err != -EINPROGRESS && err != -EBUSY) |
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return pkcs1pad_encrypt_sign_complete(req, err); |
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return err; |
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} |
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static int pkcs1pad_decrypt_complete(struct akcipher_request *req, int err) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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unsigned int dst_len; |
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unsigned int pos; |
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u8 *out_buf; |
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if (err) |
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goto done; |
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err = -EINVAL; |
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dst_len = req_ctx->child_req.dst_len; |
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if (dst_len < ctx->key_size - 1) |
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goto done; |
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out_buf = req_ctx->out_buf; |
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if (dst_len == ctx->key_size) { |
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if (out_buf[0] != 0x00) |
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/* Decrypted value had no leading 0 byte */ |
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goto done; |
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dst_len--; |
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out_buf++; |
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} |
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if (out_buf[0] != 0x02) |
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goto done; |
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for (pos = 1; pos < dst_len; pos++) |
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if (out_buf[pos] == 0x00) |
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break; |
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if (pos < 9 || pos == dst_len) |
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goto done; |
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pos++; |
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err = 0; |
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if (req->dst_len < dst_len - pos) |
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err = -EOVERFLOW; |
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req->dst_len = dst_len - pos; |
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if (!err) |
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sg_copy_from_buffer(req->dst, |
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sg_nents_for_len(req->dst, req->dst_len), |
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out_buf + pos, req->dst_len); |
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done: |
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kfree_sensitive(req_ctx->out_buf); |
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return err; |
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} |
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static void pkcs1pad_decrypt_complete_cb( |
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struct crypto_async_request *child_async_req, int err) |
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{ |
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struct akcipher_request *req = child_async_req->data; |
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struct crypto_async_request async_req; |
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if (err == -EINPROGRESS) |
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return; |
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async_req.data = req->base.data; |
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async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); |
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async_req.flags = child_async_req->flags; |
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req->base.complete(&async_req, pkcs1pad_decrypt_complete(req, err)); |
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} |
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static int pkcs1pad_decrypt(struct akcipher_request *req) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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int err; |
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if (!ctx->key_size || req->src_len != ctx->key_size) |
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return -EINVAL; |
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req_ctx->out_buf = kmalloc(ctx->key_size, GFP_KERNEL); |
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if (!req_ctx->out_buf) |
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return -ENOMEM; |
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pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf, |
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ctx->key_size, NULL); |
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akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); |
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akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, |
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pkcs1pad_decrypt_complete_cb, req); |
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/* Reuse input buffer, output to a new buffer */ |
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akcipher_request_set_crypt(&req_ctx->child_req, req->src, |
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req_ctx->out_sg, req->src_len, |
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ctx->key_size); |
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err = crypto_akcipher_decrypt(&req_ctx->child_req); |
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if (err != -EINPROGRESS && err != -EBUSY) |
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return pkcs1pad_decrypt_complete(req, err); |
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return err; |
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} |
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static int pkcs1pad_sign(struct akcipher_request *req) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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struct akcipher_instance *inst = akcipher_alg_instance(tfm); |
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struct pkcs1pad_inst_ctx *ictx = akcipher_instance_ctx(inst); |
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const struct rsa_asn1_template *digest_info = ictx->digest_info; |
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int err; |
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unsigned int ps_end, digest_size = 0; |
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if (!ctx->key_size) |
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return -EINVAL; |
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if (digest_info) |
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digest_size = digest_info->size; |
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if (req->src_len + digest_size > ctx->key_size - 11) |
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return -EOVERFLOW; |
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if (req->dst_len < ctx->key_size) { |
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req->dst_len = ctx->key_size; |
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return -EOVERFLOW; |
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} |
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req_ctx->in_buf = kmalloc(ctx->key_size - 1 - req->src_len, |
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GFP_KERNEL); |
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if (!req_ctx->in_buf) |
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return -ENOMEM; |
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ps_end = ctx->key_size - digest_size - req->src_len - 2; |
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req_ctx->in_buf[0] = 0x01; |
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memset(req_ctx->in_buf + 1, 0xff, ps_end - 1); |
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req_ctx->in_buf[ps_end] = 0x00; |
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if (digest_info) |
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memcpy(req_ctx->in_buf + ps_end + 1, digest_info->data, |
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digest_info->size); |
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pkcs1pad_sg_set_buf(req_ctx->in_sg, req_ctx->in_buf, |
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ctx->key_size - 1 - req->src_len, req->src); |
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akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); |
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akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, |
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pkcs1pad_encrypt_sign_complete_cb, req); |
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|
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/* Reuse output buffer */ |
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akcipher_request_set_crypt(&req_ctx->child_req, req_ctx->in_sg, |
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req->dst, ctx->key_size - 1, req->dst_len); |
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err = crypto_akcipher_decrypt(&req_ctx->child_req); |
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if (err != -EINPROGRESS && err != -EBUSY) |
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return pkcs1pad_encrypt_sign_complete(req, err); |
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return err; |
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} |
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static int pkcs1pad_verify_complete(struct akcipher_request *req, int err) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
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struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
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struct akcipher_instance *inst = akcipher_alg_instance(tfm); |
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struct pkcs1pad_inst_ctx *ictx = akcipher_instance_ctx(inst); |
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const struct rsa_asn1_template *digest_info = ictx->digest_info; |
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unsigned int dst_len; |
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unsigned int pos; |
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u8 *out_buf; |
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if (err) |
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goto done; |
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err = -EINVAL; |
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dst_len = req_ctx->child_req.dst_len; |
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if (dst_len < ctx->key_size - 1) |
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goto done; |
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out_buf = req_ctx->out_buf; |
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if (dst_len == ctx->key_size) { |
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if (out_buf[0] != 0x00) |
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/* Decrypted value had no leading 0 byte */ |
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goto done; |
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dst_len--; |
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out_buf++; |
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} |
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err = -EBADMSG; |
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if (out_buf[0] != 0x01) |
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goto done; |
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for (pos = 1; pos < dst_len; pos++) |
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if (out_buf[pos] != 0xff) |
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break; |
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if (pos < 9 || pos == dst_len || out_buf[pos] != 0x00) |
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goto done; |
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pos++; |
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if (digest_info) { |
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if (crypto_memneq(out_buf + pos, digest_info->data, |
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digest_info->size)) |
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goto done; |
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pos += digest_info->size; |
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} |
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err = 0; |
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if (req->dst_len != dst_len - pos) { |
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err = -EKEYREJECTED; |
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req->dst_len = dst_len - pos; |
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goto done; |
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} |
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/* Extract appended digest. */ |
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sg_pcopy_to_buffer(req->src, |
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sg_nents_for_len(req->src, |
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req->src_len + req->dst_len), |
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req_ctx->out_buf + ctx->key_size, |
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req->dst_len, ctx->key_size); |
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/* Do the actual verification step. */ |
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if (memcmp(req_ctx->out_buf + ctx->key_size, out_buf + pos, |
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req->dst_len) != 0) |
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err = -EKEYREJECTED; |
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done: |
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kfree_sensitive(req_ctx->out_buf); |
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return err; |
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} |
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static void pkcs1pad_verify_complete_cb( |
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struct crypto_async_request *child_async_req, int err) |
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{ |
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struct akcipher_request *req = child_async_req->data; |
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struct crypto_async_request async_req; |
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if (err == -EINPROGRESS) |
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return; |
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async_req.data = req->base.data; |
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async_req.tfm = crypto_akcipher_tfm(crypto_akcipher_reqtfm(req)); |
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async_req.flags = child_async_req->flags; |
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req->base.complete(&async_req, pkcs1pad_verify_complete(req, err)); |
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} |
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|
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/* |
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* The verify operation is here for completeness similar to the verification |
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* defined in RFC2313 section 10.2 except that block type 0 is not accepted, |
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* as in RFC2437. RFC2437 section 9.2 doesn't define any operation to |
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* retrieve the DigestInfo from a signature, instead the user is expected |
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* to call the sign operation to generate the expected signature and compare |
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* signatures instead of the message-digests. |
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*/ |
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static int pkcs1pad_verify(struct akcipher_request *req) |
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{ |
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struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); |
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struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
|
struct pkcs1pad_request *req_ctx = akcipher_request_ctx(req); |
|
int err; |
|
|
|
if (WARN_ON(req->dst) || |
|
WARN_ON(!req->dst_len) || |
|
!ctx->key_size || req->src_len < ctx->key_size) |
|
return -EINVAL; |
|
|
|
req_ctx->out_buf = kmalloc(ctx->key_size + req->dst_len, GFP_KERNEL); |
|
if (!req_ctx->out_buf) |
|
return -ENOMEM; |
|
|
|
pkcs1pad_sg_set_buf(req_ctx->out_sg, req_ctx->out_buf, |
|
ctx->key_size, NULL); |
|
|
|
akcipher_request_set_tfm(&req_ctx->child_req, ctx->child); |
|
akcipher_request_set_callback(&req_ctx->child_req, req->base.flags, |
|
pkcs1pad_verify_complete_cb, req); |
|
|
|
/* Reuse input buffer, output to a new buffer */ |
|
akcipher_request_set_crypt(&req_ctx->child_req, req->src, |
|
req_ctx->out_sg, req->src_len, |
|
ctx->key_size); |
|
|
|
err = crypto_akcipher_encrypt(&req_ctx->child_req); |
|
if (err != -EINPROGRESS && err != -EBUSY) |
|
return pkcs1pad_verify_complete(req, err); |
|
|
|
return err; |
|
} |
|
|
|
static int pkcs1pad_init_tfm(struct crypto_akcipher *tfm) |
|
{ |
|
struct akcipher_instance *inst = akcipher_alg_instance(tfm); |
|
struct pkcs1pad_inst_ctx *ictx = akcipher_instance_ctx(inst); |
|
struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
|
struct crypto_akcipher *child_tfm; |
|
|
|
child_tfm = crypto_spawn_akcipher(&ictx->spawn); |
|
if (IS_ERR(child_tfm)) |
|
return PTR_ERR(child_tfm); |
|
|
|
ctx->child = child_tfm; |
|
return 0; |
|
} |
|
|
|
static void pkcs1pad_exit_tfm(struct crypto_akcipher *tfm) |
|
{ |
|
struct pkcs1pad_ctx *ctx = akcipher_tfm_ctx(tfm); |
|
|
|
crypto_free_akcipher(ctx->child); |
|
} |
|
|
|
static void pkcs1pad_free(struct akcipher_instance *inst) |
|
{ |
|
struct pkcs1pad_inst_ctx *ctx = akcipher_instance_ctx(inst); |
|
struct crypto_akcipher_spawn *spawn = &ctx->spawn; |
|
|
|
crypto_drop_akcipher(spawn); |
|
kfree(inst); |
|
} |
|
|
|
static int pkcs1pad_create(struct crypto_template *tmpl, struct rtattr **tb) |
|
{ |
|
u32 mask; |
|
struct akcipher_instance *inst; |
|
struct pkcs1pad_inst_ctx *ctx; |
|
struct akcipher_alg *rsa_alg; |
|
const char *hash_name; |
|
int err; |
|
|
|
err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AKCIPHER, &mask); |
|
if (err) |
|
return err; |
|
|
|
inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
|
if (!inst) |
|
return -ENOMEM; |
|
|
|
ctx = akcipher_instance_ctx(inst); |
|
|
|
err = crypto_grab_akcipher(&ctx->spawn, akcipher_crypto_instance(inst), |
|
crypto_attr_alg_name(tb[1]), 0, mask); |
|
if (err) |
|
goto err_free_inst; |
|
|
|
rsa_alg = crypto_spawn_akcipher_alg(&ctx->spawn); |
|
|
|
err = -ENAMETOOLONG; |
|
hash_name = crypto_attr_alg_name(tb[2]); |
|
if (IS_ERR(hash_name)) { |
|
if (snprintf(inst->alg.base.cra_name, |
|
CRYPTO_MAX_ALG_NAME, "pkcs1pad(%s)", |
|
rsa_alg->base.cra_name) >= CRYPTO_MAX_ALG_NAME) |
|
goto err_free_inst; |
|
|
|
if (snprintf(inst->alg.base.cra_driver_name, |
|
CRYPTO_MAX_ALG_NAME, "pkcs1pad(%s)", |
|
rsa_alg->base.cra_driver_name) >= |
|
CRYPTO_MAX_ALG_NAME) |
|
goto err_free_inst; |
|
} else { |
|
ctx->digest_info = rsa_lookup_asn1(hash_name); |
|
if (!ctx->digest_info) { |
|
err = -EINVAL; |
|
goto err_free_inst; |
|
} |
|
|
|
if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, |
|
"pkcs1pad(%s,%s)", rsa_alg->base.cra_name, |
|
hash_name) >= CRYPTO_MAX_ALG_NAME) |
|
goto err_free_inst; |
|
|
|
if (snprintf(inst->alg.base.cra_driver_name, |
|
CRYPTO_MAX_ALG_NAME, "pkcs1pad(%s,%s)", |
|
rsa_alg->base.cra_driver_name, |
|
hash_name) >= CRYPTO_MAX_ALG_NAME) |
|
goto err_free_inst; |
|
} |
|
|
|
inst->alg.base.cra_priority = rsa_alg->base.cra_priority; |
|
inst->alg.base.cra_ctxsize = sizeof(struct pkcs1pad_ctx); |
|
|
|
inst->alg.init = pkcs1pad_init_tfm; |
|
inst->alg.exit = pkcs1pad_exit_tfm; |
|
|
|
inst->alg.encrypt = pkcs1pad_encrypt; |
|
inst->alg.decrypt = pkcs1pad_decrypt; |
|
inst->alg.sign = pkcs1pad_sign; |
|
inst->alg.verify = pkcs1pad_verify; |
|
inst->alg.set_pub_key = pkcs1pad_set_pub_key; |
|
inst->alg.set_priv_key = pkcs1pad_set_priv_key; |
|
inst->alg.max_size = pkcs1pad_get_max_size; |
|
inst->alg.reqsize = sizeof(struct pkcs1pad_request) + rsa_alg->reqsize; |
|
|
|
inst->free = pkcs1pad_free; |
|
|
|
err = akcipher_register_instance(tmpl, inst); |
|
if (err) { |
|
err_free_inst: |
|
pkcs1pad_free(inst); |
|
} |
|
return err; |
|
} |
|
|
|
struct crypto_template rsa_pkcs1pad_tmpl = { |
|
.name = "pkcs1pad", |
|
.create = pkcs1pad_create, |
|
.module = THIS_MODULE, |
|
};
|
|
|