diff options
| -rw-r--r-- | crypto/cipher-nettle.c | 144 |
1 files changed, 109 insertions, 35 deletions
diff --git a/crypto/cipher-nettle.c b/crypto/cipher-nettle.c index bec4f1c210..70909fb7fe 100644 --- a/crypto/cipher-nettle.c +++ b/crypto/cipher-nettle.c @@ -29,85 +29,147 @@ #include <nettle/serpent.h> #include <nettle/twofish.h> -#if CONFIG_NETTLE_VERSION_MAJOR < 3 -typedef nettle_crypt_func nettle_cipher_func; +typedef void (*QCryptoCipherNettleFuncWrapper)(const void *ctx, + size_t length, + uint8_t *dst, + const uint8_t *src); +#if CONFIG_NETTLE_VERSION_MAJOR < 3 +typedef nettle_crypt_func * QCryptoCipherNettleFuncNative; typedef void * cipher_ctx_t; typedef unsigned cipher_length_t; #define cast5_set_key cast128_set_key #else +typedef nettle_cipher_func * QCryptoCipherNettleFuncNative; typedef const void * cipher_ctx_t; typedef size_t cipher_length_t; #endif -static nettle_cipher_func aes_encrypt_wrapper; -static nettle_cipher_func aes_decrypt_wrapper; -static nettle_cipher_func des_encrypt_wrapper; -static nettle_cipher_func des_decrypt_wrapper; - typedef struct QCryptoNettleAES { struct aes_ctx enc; struct aes_ctx dec; } QCryptoNettleAES; -static void aes_encrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void aes_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + const QCryptoNettleAES *aesctx = ctx; + aes_encrypt(&aesctx->enc, length, dst, src); +} + +static void aes_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + const QCryptoNettleAES *aesctx = ctx; + aes_decrypt(&aesctx->dec, length, dst, src); +} + +static void des_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + des_encrypt(ctx, length, dst, src); +} + +static void des_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + des_decrypt(ctx, length, dst, src); +} + +static void cast128_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + cast128_encrypt(ctx, length, dst, src); +} + +static void cast128_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + cast128_decrypt(ctx, length, dst, src); +} + +static void serpent_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + serpent_encrypt(ctx, length, dst, src); +} + +static void serpent_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + serpent_decrypt(ctx, length, dst, src); +} + +static void twofish_encrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + twofish_encrypt(ctx, length, dst, src); +} + +static void twofish_decrypt_native(cipher_ctx_t ctx, cipher_length_t length, + uint8_t *dst, const uint8_t *src) +{ + twofish_decrypt(ctx, length, dst, src); +} + +static void aes_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { const QCryptoNettleAES *aesctx = ctx; aes_encrypt(&aesctx->enc, length, dst, src); } -static void aes_decrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void aes_decrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { const QCryptoNettleAES *aesctx = ctx; aes_decrypt(&aesctx->dec, length, dst, src); } -static void des_encrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void des_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { des_encrypt(ctx, length, dst, src); } -static void des_decrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void des_decrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { des_decrypt(ctx, length, dst, src); } -static void cast128_encrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void cast128_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { cast128_encrypt(ctx, length, dst, src); } -static void cast128_decrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void cast128_decrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { cast128_decrypt(ctx, length, dst, src); } -static void serpent_encrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void serpent_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { serpent_encrypt(ctx, length, dst, src); } -static void serpent_decrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void serpent_decrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { serpent_decrypt(ctx, length, dst, src); } -static void twofish_encrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void twofish_encrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { twofish_encrypt(ctx, length, dst, src); } -static void twofish_decrypt_wrapper(cipher_ctx_t ctx, cipher_length_t length, +static void twofish_decrypt_wrapper(const void *ctx, size_t length, uint8_t *dst, const uint8_t *src) { twofish_decrypt(ctx, length, dst, src); @@ -120,8 +182,10 @@ struct QCryptoCipherNettle { /* Second cipher context for XTS mode only */ void *ctx_tweak; /* Cipher callbacks for both contexts */ - nettle_cipher_func *alg_encrypt; - nettle_cipher_func *alg_decrypt; + QCryptoCipherNettleFuncNative alg_encrypt_native; + QCryptoCipherNettleFuncNative alg_decrypt_native; + QCryptoCipherNettleFuncWrapper alg_encrypt_wrapper; + QCryptoCipherNettleFuncWrapper alg_decrypt_wrapper; uint8_t *iv; size_t blocksize; @@ -184,8 +248,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, des_set_key(ctx->ctx, rfbkey); g_free(rfbkey); - ctx->alg_encrypt = des_encrypt_wrapper; - ctx->alg_decrypt = des_decrypt_wrapper; + ctx->alg_encrypt_native = des_encrypt_native; + ctx->alg_decrypt_native = des_decrypt_native; + ctx->alg_encrypt_wrapper = des_encrypt_wrapper; + ctx->alg_decrypt_wrapper = des_decrypt_wrapper; ctx->blocksize = DES_BLOCK_SIZE; break; @@ -215,8 +281,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, nkey, key); } - ctx->alg_encrypt = aes_encrypt_wrapper; - ctx->alg_decrypt = aes_decrypt_wrapper; + ctx->alg_encrypt_native = aes_encrypt_native; + ctx->alg_decrypt_native = aes_decrypt_native; + ctx->alg_encrypt_wrapper = aes_encrypt_wrapper; + ctx->alg_decrypt_wrapper = aes_decrypt_wrapper; ctx->blocksize = AES_BLOCK_SIZE; break; @@ -234,8 +302,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, cast5_set_key(ctx->ctx, nkey, key); } - ctx->alg_encrypt = cast128_encrypt_wrapper; - ctx->alg_decrypt = cast128_decrypt_wrapper; + ctx->alg_encrypt_native = cast128_encrypt_native; + ctx->alg_decrypt_native = cast128_decrypt_native; + ctx->alg_encrypt_wrapper = cast128_encrypt_wrapper; + ctx->alg_decrypt_wrapper = cast128_decrypt_wrapper; ctx->blocksize = CAST128_BLOCK_SIZE; break; @@ -255,8 +325,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, serpent_set_key(ctx->ctx, nkey, key); } - ctx->alg_encrypt = serpent_encrypt_wrapper; - ctx->alg_decrypt = serpent_decrypt_wrapper; + ctx->alg_encrypt_native = serpent_encrypt_native; + ctx->alg_decrypt_native = serpent_decrypt_native; + ctx->alg_encrypt_wrapper = serpent_encrypt_wrapper; + ctx->alg_decrypt_wrapper = serpent_decrypt_wrapper; ctx->blocksize = SERPENT_BLOCK_SIZE; break; @@ -276,8 +348,10 @@ QCryptoCipher *qcrypto_cipher_new(QCryptoCipherAlgorithm alg, twofish_set_key(ctx->ctx, nkey, key); } - ctx->alg_encrypt = twofish_encrypt_wrapper; - ctx->alg_decrypt = twofish_decrypt_wrapper; + ctx->alg_encrypt_native = twofish_encrypt_native; + ctx->alg_decrypt_native = twofish_decrypt_native; + ctx->alg_encrypt_wrapper = twofish_encrypt_wrapper; + ctx->alg_decrypt_wrapper = twofish_decrypt_wrapper; ctx->blocksize = TWOFISH_BLOCK_SIZE; break; @@ -332,18 +406,18 @@ int qcrypto_cipher_encrypt(QCryptoCipher *cipher, switch (cipher->mode) { case QCRYPTO_CIPHER_MODE_ECB: - ctx->alg_encrypt(ctx->ctx, len, out, in); + ctx->alg_encrypt_wrapper(ctx->ctx, len, out, in); break; case QCRYPTO_CIPHER_MODE_CBC: - cbc_encrypt(ctx->ctx, ctx->alg_encrypt, + cbc_encrypt(ctx->ctx, ctx->alg_encrypt_native, ctx->blocksize, ctx->iv, len, out, in); break; case QCRYPTO_CIPHER_MODE_XTS: xts_encrypt(ctx->ctx, ctx->ctx_tweak, - ctx->alg_encrypt, ctx->alg_encrypt, + ctx->alg_encrypt_wrapper, ctx->alg_encrypt_wrapper, ctx->iv, len, out, in); break; @@ -372,11 +446,11 @@ int qcrypto_cipher_decrypt(QCryptoCipher *cipher, switch (cipher->mode) { case QCRYPTO_CIPHER_MODE_ECB: - ctx->alg_decrypt(ctx->ctx, len, out, in); + ctx->alg_decrypt_wrapper(ctx->ctx, len, out, in); break; case QCRYPTO_CIPHER_MODE_CBC: - cbc_decrypt(ctx->ctx, ctx->alg_decrypt, + cbc_decrypt(ctx->ctx, ctx->alg_decrypt_native, ctx->blocksize, ctx->iv, len, out, in); break; @@ -388,7 +462,7 @@ int qcrypto_cipher_decrypt(QCryptoCipher *cipher, return -1; } xts_decrypt(ctx->ctx, ctx->ctx_tweak, - ctx->alg_encrypt, ctx->alg_decrypt, + ctx->alg_encrypt_wrapper, ctx->alg_decrypt_wrapper, ctx->iv, len, out, in); break; |