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91 lines
3.0 KiB
91 lines
3.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* eCryptfs: Linux filesystem encryption layer |
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* Functions only useful for debugging. |
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* |
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* Copyright (C) 2006 International Business Machines Corp. |
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* Author(s): Michael A. Halcrow <[email protected]> |
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*/ |
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#include "ecryptfs_kernel.h" |
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/* |
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* ecryptfs_dump_auth_tok - debug function to print auth toks |
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* |
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* This function will print the contents of an ecryptfs authentication |
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* token. |
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*/ |
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void ecryptfs_dump_auth_tok(struct ecryptfs_auth_tok *auth_tok) |
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{ |
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char salt[ECRYPTFS_SALT_SIZE * 2 + 1]; |
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char sig[ECRYPTFS_SIG_SIZE_HEX + 1]; |
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ecryptfs_printk(KERN_DEBUG, "Auth tok at mem loc [%p]:\n", |
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auth_tok); |
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if (auth_tok->flags & ECRYPTFS_PRIVATE_KEY) { |
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ecryptfs_printk(KERN_DEBUG, " * private key type\n"); |
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} else { |
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ecryptfs_printk(KERN_DEBUG, " * passphrase type\n"); |
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ecryptfs_to_hex(salt, auth_tok->token.password.salt, |
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ECRYPTFS_SALT_SIZE); |
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salt[ECRYPTFS_SALT_SIZE * 2] = '\0'; |
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ecryptfs_printk(KERN_DEBUG, " * salt = [%s]\n", salt); |
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if (auth_tok->token.password.flags & |
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ECRYPTFS_PERSISTENT_PASSWORD) { |
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ecryptfs_printk(KERN_DEBUG, " * persistent\n"); |
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} |
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memcpy(sig, auth_tok->token.password.signature, |
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ECRYPTFS_SIG_SIZE_HEX); |
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sig[ECRYPTFS_SIG_SIZE_HEX] = '\0'; |
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ecryptfs_printk(KERN_DEBUG, " * signature = [%s]\n", sig); |
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} |
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ecryptfs_printk(KERN_DEBUG, " * session_key.flags = [0x%x]\n", |
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auth_tok->session_key.flags); |
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if (auth_tok->session_key.flags |
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& ECRYPTFS_USERSPACE_SHOULD_TRY_TO_DECRYPT) |
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ecryptfs_printk(KERN_DEBUG, |
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" * Userspace decrypt request set\n"); |
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if (auth_tok->session_key.flags |
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& ECRYPTFS_USERSPACE_SHOULD_TRY_TO_ENCRYPT) |
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ecryptfs_printk(KERN_DEBUG, |
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" * Userspace encrypt request set\n"); |
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if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_DECRYPTED_KEY) { |
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ecryptfs_printk(KERN_DEBUG, " * Contains decrypted key\n"); |
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ecryptfs_printk(KERN_DEBUG, |
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" * session_key.decrypted_key_size = [0x%x]\n", |
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auth_tok->session_key.decrypted_key_size); |
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ecryptfs_printk(KERN_DEBUG, " * Decrypted session key " |
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"dump:\n"); |
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if (ecryptfs_verbosity > 0) |
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ecryptfs_dump_hex(auth_tok->session_key.decrypted_key, |
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ECRYPTFS_DEFAULT_KEY_BYTES); |
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} |
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if (auth_tok->session_key.flags & ECRYPTFS_CONTAINS_ENCRYPTED_KEY) { |
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ecryptfs_printk(KERN_DEBUG, " * Contains encrypted key\n"); |
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ecryptfs_printk(KERN_DEBUG, |
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" * session_key.encrypted_key_size = [0x%x]\n", |
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auth_tok->session_key.encrypted_key_size); |
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ecryptfs_printk(KERN_DEBUG, " * Encrypted session key " |
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"dump:\n"); |
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if (ecryptfs_verbosity > 0) |
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ecryptfs_dump_hex(auth_tok->session_key.encrypted_key, |
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auth_tok->session_key. |
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encrypted_key_size); |
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} |
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} |
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/** |
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* ecryptfs_dump_hex - debug hex printer |
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* @data: string of bytes to be printed |
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* @bytes: number of bytes to print |
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* |
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* Dump hexadecimal representation of char array |
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*/ |
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void ecryptfs_dump_hex(char *data, int bytes) |
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{ |
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if (ecryptfs_verbosity < 1) |
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return; |
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print_hex_dump(KERN_DEBUG, "ecryptfs: ", DUMP_PREFIX_OFFSET, 16, 1, |
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data, bytes, false); |
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}
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