mbedTLS 2.x support

[umurmur.git] / src / crypt.c

diff --git a/src/crypt.c b/src/crypt.c
index 89fe19d246490eb291dc27f8ac78732a27ef9edd..4b1b4f4261af769c09cb7b741eb6c6b29ac5b64d 100644 (file)
--- a/src/crypt.c
+++ b/src/crypt.c
@@ -43,7 +43,7 @@
 #include "crypt.h"
 #include "ssl.h"
 
-#ifdef USE_POLARSSL_HAVEGE
+#if defined(USE_POLARSSL_HAVEGE) || defined(USE_MBEDTLS_HAVEGE)
 extern havege_state hs;
 #endif
 
@@ -68,17 +68,15 @@ bool_t CryptState_isValid(cryptState_t *cs)
        return cs->bInit;
 }
 
-void CryptState_genKey(cryptState_t *cs) {
-       RAND_bytes(cs->raw_key, AES_BLOCK_SIZE);
-       RAND_bytes(cs->encrypt_iv, AES_BLOCK_SIZE);
-       RAND_bytes(cs->decrypt_iv, AES_BLOCK_SIZE);
-#ifndef USE_POLARSSL
-       AES_set_encrypt_key(cs->raw_key, 128, &cs->encrypt_key);
-       AES_set_decrypt_key(cs->raw_key, 128, &cs->decrypt_key);
-#else
-       aes_setkey_enc(&cs->aes_enc, cs->raw_key, 128);
-       aes_setkey_dec(&cs->aes_dec, cs->raw_key, 128);
-#endif
+void CryptState_genKey(cryptState_t *cs)
+{
+       CRYPT_RANDOM_BYTES(&cs->raw_key, AES_BLOCK_SIZE);
+       CRYPT_RANDOM_BYTES(&cs->encrypt_iv, AES_BLOCK_SIZE);
+       CRYPT_RANDOM_BYTES(&cs->decrypt_iv, AES_BLOCK_SIZE);
+
+       CRYPT_SET_ENC_KEY(&cs->encrypt_key, cs->raw_key, 128);
+       CRYPT_SET_DEC_KEY(&cs->decrypt_key, cs->raw_key, 128);
+
        cs->bInit = true;
 }
 
@@ -87,13 +85,10 @@ void CryptState_setKey(cryptState_t *cs, const unsigned char *rkey, const unsign
        memcpy(cs->raw_key, rkey, AES_BLOCK_SIZE);
        memcpy(cs->encrypt_iv, eiv, AES_BLOCK_SIZE);
        memcpy(cs->decrypt_iv, div, AES_BLOCK_SIZE);
-#ifndef USE_POLARSSL
-       AES_set_encrypt_key(cs->decrypt_iv, 128, &cs->encrypt_key);
-       AES_set_decrypt_key(cs->raw_key, 128, &cs->decrypt_key);
-#else
-       aes_setkey_enc(&cs->aes_enc, cs->decrypt_iv, 128);
-       aes_setkey_dec(&cs->aes_dec, cs->raw_key, 128);
-#endif
+
+       CRYPT_SET_ENC_KEY(&cs->encrypt_key, cs->decrypt_iv, 128);
+       CRYPT_SET_DEC_KEY(&cs->decrypt_key, cs->raw_key, 128);
+
        cs->bInit = true;
 }
 
@@ -199,7 +194,7 @@ bool_t CryptState_decrypt(cryptState_t *cs, const unsigned char *source, unsigne
        CryptState_ocb_decrypt(cs, source+4, dst, plain_length, cs->decrypt_iv, tag);
 
        if (memcmp(tag, source+1, 3) != 0) {
-               memcpy(cs->decrypt_iv, saveiv, AES_BLOCK_SIZE);         
+               memcpy(cs->decrypt_iv, saveiv, AES_BLOCK_SIZE);
                return false;
        }
        cs->decrypt_history[cs->decrypt_iv[0]] = cs->decrypt_iv[1];
@@ -215,34 +210,6 @@ bool_t CryptState_decrypt(cryptState_t *cs, const unsigned char *source, unsigne
        return true;
 }
 
-#if defined(__LP64__)
-#define BLOCKSIZE 2
-#define SHIFTBITS 63
-typedef uint64_t subblock;
-
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define SWAPPED(x) (x)
-#else
-#ifdef __x86_64__
-#define SWAPPED(x) ({register uint64_t __out, __in = (x); __asm__("bswap %q0" : "=r"(__out) : "0"(__in)); __out;})
-#else
-#include <byteswap.h>
-#define SWAPPED(x) bswap_64(x)
-#endif
-#endif
-
-#else
-
-#define BLOCKSIZE 4
-#define SHIFTBITS 31
-typedef uint32_t subblock;
-#define SWAPPED(x) htonl(x)
-
-#endif
-
-#define HIGHBIT (1<<SHIFTBITS);
-
-
 static void inline XOR(subblock *dst, const subblock *a, const subblock *b) {
        int i;
        for (i=0;i<BLOCKSIZE;i++) {
@@ -272,25 +239,17 @@ static void inline ZERO(subblock *block) {
                block[i]=0;
 }
 
-#ifdef USE_POLARSSL
-#define AESencrypt(src, dst, cryptstate) aes_crypt_ecb(&(cryptstate)->aes_enc, AES_ENCRYPT, (unsigned char *)(src), (unsigned char *)(dst));
-#define AESdecrypt(src, dst, cryptstate) aes_crypt_ecb(&(cryptstate)->aes_dec, AES_DECRYPT, (unsigned char *)(src), (unsigned char *)(dst));
-#else
-#define AESencrypt(src, dst, cryptstate) AES_encrypt((unsigned char *)(src), (unsigned char *)(dst), &(cryptstate)->encrypt_key);
-#define AESdecrypt(src, dst, cryptstate) AES_decrypt((unsigned char *)(src), (unsigned char *)(dst), &(cryptstate)->decrypt_key);
-#endif
-
 void CryptState_ocb_encrypt(cryptState_t *cs, const unsigned char *plain, unsigned char *encrypted, unsigned int len, const unsigned char *nonce, unsigned char *tag) {
        subblock checksum[BLOCKSIZE], delta[BLOCKSIZE], tmp[BLOCKSIZE], pad[BLOCKSIZE];
 
        // Initialize
-       AESencrypt(nonce, delta, cs);
+       CRYPT_AES_ENCRYPT(nonce, delta, cs);
        ZERO(checksum);
 
        while (len > AES_BLOCK_SIZE) {
                S2(delta);
                XOR(tmp, delta, (const subblock *)(plain));
-               AESencrypt(tmp, tmp, cs);
+               CRYPT_AES_ENCRYPT(tmp, tmp, cs);
                XOR((subblock *)(encrypted), delta, tmp);
                XOR(checksum, checksum, (subblock *)(plain));
                len -= AES_BLOCK_SIZE;
@@ -302,7 +261,7 @@ void CryptState_ocb_encrypt(cryptState_t *cs, const unsigned char *plain, unsign
        ZERO(tmp);
        tmp[BLOCKSIZE - 1] = SWAPPED(len * 8);
        XOR(tmp, tmp, delta);
-       AESencrypt(tmp, pad, cs);
+       CRYPT_AES_ENCRYPT(tmp, pad, cs);
        memcpy(tmp, plain, len);
        memcpy((unsigned char *)tmp + len, (unsigned char *)pad + len, AES_BLOCK_SIZE - len);
        XOR(checksum, checksum, tmp);
@@ -311,19 +270,19 @@ void CryptState_ocb_encrypt(cryptState_t *cs, const unsigned char *plain, unsign
 
        S3(delta);
        XOR(tmp, delta, checksum);
-       AESencrypt(tmp, tag, cs);
+       CRYPT_AES_ENCRYPT(tmp, tag, cs);
 }
 
 void CryptState_ocb_decrypt(cryptState_t *cs, const unsigned char *encrypted, unsigned char *plain, unsigned int len, const unsigned char *nonce, unsigned char *tag) {
        subblock checksum[BLOCKSIZE], delta[BLOCKSIZE], tmp[BLOCKSIZE], pad[BLOCKSIZE];
        // Initialize
-       AESencrypt(nonce, delta, cs);
+       CRYPT_AES_ENCRYPT(nonce, delta, cs);
        ZERO(checksum);
 
        while (len > AES_BLOCK_SIZE) {
                S2(delta);
                XOR(tmp, delta, (const subblock *)(encrypted));
-               AESdecrypt(tmp, tmp, cs);
+               CRYPT_AES_DECRYPT(tmp, tmp, cs);
                XOR((subblock *)(plain), delta, tmp);
                XOR(checksum, checksum, (const subblock *)(plain));
                len -= AES_BLOCK_SIZE;
@@ -335,7 +294,7 @@ void CryptState_ocb_decrypt(cryptState_t *cs, const unsigned char *encrypted, un
        ZERO(tmp);
        tmp[BLOCKSIZE - 1] = SWAPPED(len * 8);
        XOR(tmp, tmp, delta);
-       AESencrypt(tmp, pad, cs);
+       CRYPT_AES_ENCRYPT(tmp, pad, cs);
        memset(tmp, 0, AES_BLOCK_SIZE);
        memcpy(tmp, encrypted, len);
        XOR(tmp, tmp, pad);
@@ -344,5 +303,5 @@ void CryptState_ocb_decrypt(cryptState_t *cs, const unsigned char *encrypted, un
 
        S3(delta);
        XOR(tmp, delta, checksum);
-       AESencrypt(tmp, tag, cs);
+       CRYPT_AES_ENCRYPT(tmp, tag, cs);
 }