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changed aes transform to cipher text stealing mode
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6d05d48878
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@ -48,10 +48,10 @@ typedef struct aes_context_t {
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int aes_cbc_encrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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const unsigned char *iv, aes_context_t *ctx);
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unsigned char *iv, aes_context_t *ctx);
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int aes_cbc_decrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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const unsigned char *iv, aes_context_t *ctx);
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unsigned char *iv, aes_context_t *ctx);
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int aes_ecb_decrypt (unsigned char *out, const unsigned char *in, aes_context_t *ctx);
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@ -45,7 +45,7 @@ static char *openssl_err_as_string (void) {
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/* ****************************************************** */
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int aes_cbc_encrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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const unsigned char *iv, aes_context_t *ctx) {
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unsigned char *iv, aes_context_t *ctx) {
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#ifdef HAVE_OPENSSL_1_1
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int evp_len;
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@ -81,13 +81,14 @@ int aes_cbc_encrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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&(ctx->enc_key),
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iv,
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AES_ENCRYPT);
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memset(iv, 0, AES_BLOCK_SIZE);
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#endif
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}
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/* ****************************************************** */
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int aes_cbc_decrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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const unsigned char *iv, aes_context_t *ctx) {
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unsigned char *iv, aes_context_t *ctx) {
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#ifdef HAVE_OPENSSL_1_1
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int evp_len;
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@ -123,6 +124,7 @@ int aes_cbc_decrypt (unsigned char *out, const unsigned char *in, size_t in_len,
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&(ctx->dec_key),
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iv,
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AES_DECRYPT);
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memset(iv, 0, AES_BLOCK_SIZE);
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#endif
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return 0;
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@ -35,7 +35,7 @@
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// cbc mode is being used with random value prepended to plaintext
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// instead of iv so, actual iv is null_iv
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const uint8_t null_iv[AES_IV_SIZE] = {0};
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uint8_t null_iv[AES_IV_SIZE] = {0};
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typedef struct transop_aes {
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aes_context_t *ctx;
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