X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fcrypto_null.c;h=07a8a96d46fc1f2ef373ebb485ebf37287636726;hb=c3935e30495869dd611e1cd62253c94ebc7c6c04;hp=a0d956b529498c84ea39f2888e63878d143adc6c;hpb=6c2bb98bc33ae33c7a33a133a4cd5a06395fece5;p=safe%2Fjmp%2Flinux-2.6 diff --git a/crypto/crypto_null.c b/crypto/crypto_null.c index a0d956b..07a8a96 100644 --- a/crypto/crypto_null.c +++ b/crypto/crypto_null.c @@ -1,11 +1,11 @@ -/* +/* * Cryptographic API. * * Null algorithms, aka Much Ado About Nothing. * * These are needed for IPsec, and may be useful in general for * testing & debugging. - * + * * The null cipher is compliant with RFC2410. * * Copyright (c) 2002 James Morris @@ -16,16 +16,18 @@ * (at your option) any later version. * */ + +#include +#include #include #include #include -#include -#include #include #define NULL_KEY_SIZE 0 #define NULL_BLOCK_SIZE 1 #define NULL_DIGEST_SIZE 0 +#define NULL_IV_SIZE 0 static int null_compress(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) @@ -37,18 +39,34 @@ static int null_compress(struct crypto_tfm *tfm, const u8 *src, return 0; } -static void null_init(struct crypto_tfm *tfm) -{ } +static int null_init(struct shash_desc *desc) +{ + return 0; +} + +static int null_update(struct shash_desc *desc, const u8 *data, + unsigned int len) +{ + return 0; +} + +static int null_final(struct shash_desc *desc, u8 *out) +{ + return 0; +} -static void null_update(struct crypto_tfm *tfm, const u8 *data, - unsigned int len) -{ } +static int null_digest(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out) +{ + return 0; +} -static void null_final(struct crypto_tfm *tfm, u8 *out) -{ } +static int null_hash_setkey(struct crypto_shash *tfm, const u8 *key, + unsigned int keylen) +{ return 0; } static int null_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int keylen, u32 *flags) + unsigned int keylen) { return 0; } static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) @@ -56,6 +74,26 @@ static void null_crypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) memcpy(dst, src, NULL_BLOCK_SIZE); } +static int skcipher_null_crypt(struct blkcipher_desc *desc, + struct scatterlist *dst, + struct scatterlist *src, unsigned int nbytes) +{ + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while (walk.nbytes) { + if (walk.src.virt.addr != walk.dst.virt.addr) + memcpy(walk.dst.virt.addr, walk.src.virt.addr, + walk.nbytes); + err = blkcipher_walk_done(desc, &walk, 0); + } + + return err; +} + static struct crypto_alg compress_null = { .cra_name = "compress_null", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -68,18 +106,20 @@ static struct crypto_alg compress_null = { .coa_decompress = null_compress } } }; -static struct crypto_alg digest_null = { - .cra_name = "digest_null", - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = NULL_BLOCK_SIZE, - .cra_ctxsize = 0, - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(digest_null.cra_list), - .cra_u = { .digest = { - .dia_digestsize = NULL_DIGEST_SIZE, - .dia_init = null_init, - .dia_update = null_update, - .dia_final = null_final } } +static struct shash_alg digest_null = { + .digestsize = NULL_DIGEST_SIZE, + .setkey = null_hash_setkey, + .init = null_init, + .update = null_update, + .finup = null_digest, + .digest = null_digest, + .final = null_final, + .base = { + .cra_name = "digest_null", + .cra_flags = CRYPTO_ALG_TYPE_SHASH, + .cra_blocksize = NULL_BLOCK_SIZE, + .cra_module = THIS_MODULE, + } }; static struct crypto_alg cipher_null = { @@ -97,44 +137,71 @@ static struct crypto_alg cipher_null = { .cia_decrypt = null_crypt } } }; +static struct crypto_alg skcipher_null = { + .cra_name = "ecb(cipher_null)", + .cra_driver_name = "ecb-cipher_null", + .cra_priority = 100, + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = NULL_BLOCK_SIZE, + .cra_type = &crypto_blkcipher_type, + .cra_ctxsize = 0, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(skcipher_null.cra_list), + .cra_u = { .blkcipher = { + .min_keysize = NULL_KEY_SIZE, + .max_keysize = NULL_KEY_SIZE, + .ivsize = NULL_IV_SIZE, + .setkey = null_setkey, + .encrypt = skcipher_null_crypt, + .decrypt = skcipher_null_crypt } } +}; + MODULE_ALIAS("compress_null"); MODULE_ALIAS("digest_null"); MODULE_ALIAS("cipher_null"); -static int __init init(void) +static int __init crypto_null_mod_init(void) { int ret = 0; - + ret = crypto_register_alg(&cipher_null); if (ret < 0) goto out; - ret = crypto_register_alg(&digest_null); - if (ret < 0) { - crypto_unregister_alg(&cipher_null); - goto out; - } + ret = crypto_register_alg(&skcipher_null); + if (ret < 0) + goto out_unregister_cipher; + + ret = crypto_register_shash(&digest_null); + if (ret < 0) + goto out_unregister_skcipher; ret = crypto_register_alg(&compress_null); - if (ret < 0) { - crypto_unregister_alg(&digest_null); - crypto_unregister_alg(&cipher_null); - goto out; - } + if (ret < 0) + goto out_unregister_digest; -out: +out: return ret; + +out_unregister_digest: + crypto_unregister_shash(&digest_null); +out_unregister_skcipher: + crypto_unregister_alg(&skcipher_null); +out_unregister_cipher: + crypto_unregister_alg(&cipher_null); + goto out; } -static void __exit fini(void) +static void __exit crypto_null_mod_fini(void) { crypto_unregister_alg(&compress_null); - crypto_unregister_alg(&digest_null); + crypto_unregister_shash(&digest_null); + crypto_unregister_alg(&skcipher_null); crypto_unregister_alg(&cipher_null); } -module_init(init); -module_exit(fini); +module_init(crypto_null_mod_init); +module_exit(crypto_null_mod_fini); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Null Cryptographic Algorithms");