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Add _init() and _free() for cipher modules

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This commit is contained in:
Paul Bakker 2014-06-18 11:12:03 +02:00
parent 0464dd9357
commit c7ea99af4f
17 changed files with 375 additions and 61 deletions
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12
library/pem.c
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@ -141,13 +141,15 @@ static void pem_des_decrypt( unsigned char des_iv[8],
des_context des_ctx;
unsigned char des_key[8];
des_init( &des_ctx );
pem_pbkdf1( des_key, 8, des_iv, pwd, pwdlen );
des_setkey_dec( &des_ctx, des_key );
des_crypt_cbc( &des_ctx, DES_DECRYPT, buflen,
des_iv, buf, buf );
polarssl_zeroize( &des_ctx, sizeof( des_ctx ) );
des_free( &des_ctx );
polarssl_zeroize( des_key, 8 );
}
@ -161,13 +163,15 @@ static void pem_des3_decrypt( unsigned char des3_iv[8],
des3_context des3_ctx;
unsigned char des3_key[24];
des3_init( &des3_ctx );
pem_pbkdf1( des3_key, 24, des3_iv, pwd, pwdlen );
des3_set3key_dec( &des3_ctx, des3_key );
des3_crypt_cbc( &des3_ctx, DES_DECRYPT, buflen,
des3_iv, buf, buf );
polarssl_zeroize( &des3_ctx, sizeof( des3_ctx ) );
des3_free( &des3_ctx );
polarssl_zeroize( des3_key, 24 );
}
#endif /* POLARSSL_DES_C */
@ -183,13 +187,15 @@ static void pem_aes_decrypt( unsigned char aes_iv[16], unsigned int keylen,
aes_context aes_ctx;
unsigned char aes_key[32];
aes_init( &aes_ctx );
pem_pbkdf1( aes_key, keylen, aes_iv, pwd, pwdlen );
aes_setkey_dec( &aes_ctx, aes_key, keylen * 8 );
aes_crypt_cbc( &aes_ctx, AES_DECRYPT, buflen,
aes_iv, buf, buf );
polarssl_zeroize( &aes_ctx, sizeof( aes_ctx ) );
aes_free( &aes_ctx );
polarssl_zeroize( aes_key, keylen );
}
#endif /* POLARSSL_AES_C */