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Merged new cipher layer enhancements

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This commit is contained in:
Paul Bakker 2013-09-04 16:12:55 +02:00
parent ea6ad3f6e5 ce4112538c
commit c049955b32
12 changed files with 449 additions and 95 deletions
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2
include/polarssl/arc4.h
View file

@ -55,7 +55,7 @@ arc4_context;
*
* \param ctx ARC4 context to be initialized
* \param key the secret key
* \param keylen length of the key
* \param keylen length of the key, in bytes
*/
void arc4_setup( arc4_context *ctx, const unsigned char *key, unsigned int keylen );

110
include/polarssl/cipher.h
View file

@ -30,6 +30,12 @@
#ifndef POLARSSL_CIPHER_H
#define POLARSSL_CIPHER_H
#include "config.h"
#if defined(POLARSSL_GCM_C)
#define POLARSSL_CIPHER_MODE_AEAD
#endif
#include <string.h>
#if defined(_MSC_VER) && !defined(inline)
@ -74,6 +80,7 @@ typedef enum {
POLARSSL_CIPHER_AES_192_CTR,
POLARSSL_CIPHER_AES_256_CTR,
POLARSSL_CIPHER_AES_128_GCM,
POLARSSL_CIPHER_AES_192_GCM,
POLARSSL_CIPHER_AES_256_GCM,
POLARSSL_CIPHER_CAMELLIA_128_CBC,
POLARSSL_CIPHER_CAMELLIA_192_CBC,
@ -185,9 +192,13 @@ typedef struct {
/** Name of the cipher */
const char * name;
/** IV size, in bytes */
/** IV/NONCE size, in bytes.
* For cipher that accept many sizes: recommended size */
unsigned int iv_size;
/** Flag for ciphers that accept many sizes of IV/NONCE */
int accepts_variable_iv_size;
/** block size, in bytes */
unsigned int block_size;
@ -222,6 +233,9 @@ typedef struct {
/** Current IV or NONCE_COUNTER for CTR-mode */
unsigned char iv[POLARSSL_MAX_IV_LENGTH];
/** IV size in bytes (for ciphers with variable-length IVs) */
size_t iv_size;
/** Cipher-specific context */
void *cipher_ctx;
} cipher_context_t;
@ -315,18 +329,22 @@ static inline cipher_mode_t cipher_get_cipher_mode( const cipher_context_t *ctx
}
/**
* \brief Returns the size of the cipher's IV.
* \brief Returns the size of the cipher's IV/NONCE in bytes.
*
* \param ctx cipher's context. Must have been initialised.
*
* \return size of the cipher's IV, or 0 if ctx has not been
* initialised or accepts IV of various sizes.
* \return If IV has not been set yet: (recommended) IV size
* (0 for ciphers not using IV/NONCE).
* If IV has already been set: actual size.
*/
static inline int cipher_get_iv_size( const cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return 0;
if( ctx->iv_size != 0 )
return ctx->iv_size;
return ctx->cipher_info->iv_size;
}
@ -428,22 +446,49 @@ int cipher_setkey( cipher_context_t *ctx, const unsigned char *key, int key_leng
int cipher_set_padding_mode( cipher_context_t *ctx, cipher_padding_t mode );
/**
* \brief Reset the given context, setting the IV to iv
* \brief Set the initialization vector (IV) or nonce
*
* \param iv IV to use (or NONCE_COUNTER for CTR-mode ciphers)
* \param iv_len IV length for ciphers with variable-size IV;
* discarded by ciphers with fixed-size IV.
*
* \returns O on success, or POLARSSL_ERR_CIPHER_BAD_INPUT_DATA
*
* \note Some ciphers don't use IVs nor NONCE. For these
* ciphers, this function has no effect.
*/
int cipher_set_iv( cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len );
/**
* \brief Finish preparation of the given context
*
* \param ctx generic cipher context
* \param iv IV to use or NONCE_COUNTER in the case of a CTR-mode cipher
* \param iv_len IV length for ciphers with variable-size IV,
* Discared by ciphers with fixed-size IV.
* \param ad Additional data for AEAD ciphers, or discarded.
* May be NULL only if ad_len is 0.
* \param ad_len Length of ad for AEAD ciphers, or discarded.
*
* \returns 0 on success, POLARSSL_ERR_CIPHER_BAD_INPUT_DATA
* if parameter verification fails.
*/
int cipher_reset( cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
const unsigned char *ad, size_t ad_len );
int cipher_reset( cipher_context_t *ctx );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
/**
* \brief Add additional data (for AEAD ciphers).
* This function has no effect for non-AEAD ciphers.
* For AEAD ciphers, it may or may not be called
* repeatedly, and/or interleaved with calls to
* cipher_udpate(), depending on the cipher.
* E.g. for GCM is must be called exactly once, right
* after cipher_reset().
*
* \param ctx generic cipher context
* \param ad Additional data to use.
* \param ad_len Length of ad.
*
* \returns 0 on success, or a specific error code.
*/
int cipher_update_ad( cipher_context_t *ctx,
const unsigned char *ad, size_t ad_len );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/**
* \brief Generic cipher update function. Encrypts/decrypts
@ -480,11 +525,6 @@ int cipher_update( cipher_context_t *ctx, const unsigned char *input, size_t ile
* \param ctx Generic cipher context
* \param output buffer to write data to. Needs block_size available.
* \param olen length of the data written to the output buffer.
* \param tag Ignore by non-AEAD ciphers. For AEAD ciphers:
* - on encryption: buffer to write the tag;
* - on decryption: tag to verify.
* May be NULL if tag_len is zero.
* \param tag_len Length of the tag to write/check for AEAD ciphers.
*
* \returns 0 on success, POLARSSL_ERR_CIPHER_BAD_INPUT_DATA if
* parameter verification fails,
@ -494,8 +534,36 @@ int cipher_update( cipher_context_t *ctx, const unsigned char *input, size_t ile
* while decrypting or a cipher specific error code.
*/
int cipher_finish( cipher_context_t *ctx,
unsigned char *output, size_t *olen,
unsigned char *tag, size_t tag_len );
unsigned char *output, size_t *olen );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
/**
* \brief Write tag for AEAD ciphers.
* No effect for other ciphers.
* Must be called after cipher_finish().
*
* \param tag buffer to write the tag
* \param tag_len Length of the tag to write
*
* \return 0 on success, or a specific error code.
*/
int cipher_write_tag( cipher_context_t *ctx,
unsigned char *tag, size_t tag_len );
/**
* \brief Check tag for AEAD ciphers.
* No effect for other ciphers.
* Calling time depends on the cipher:
* for GCM, must be called after cipher_finish().
*
* \param tag Buffer holding the tag
* \param tag_len Length of the tag to check
*
* \return 0 on success, or a specific error code.
*/
int cipher_check_tag( cipher_context_t *ctx,
const unsigned char *tag, size_t tag_len );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/**
* \brief Checkup routine

1
include/polarssl/cipher_wrap.h
View file

@ -56,6 +56,7 @@ extern const cipher_info_t aes_256_ctr_info;
#if defined(POLARSSL_GCM_C)
extern const cipher_info_t aes_128_gcm_info;
extern const cipher_info_t aes_192_gcm_info;
extern const cipher_info_t aes_256_gcm_info;
#endif /* POLARSSL_GCM_C */

148
library/cipher.c
View file

@ -67,6 +67,12 @@ static const int supported_ciphers[] = {
POLARSSL_CIPHER_AES_256_CTR,
#endif /* defined(POLARSSL_CIPHER_MODE_CTR) */
#if defined(POLARSSL_GCM_C)
POLARSSL_CIPHER_AES_128_GCM,
POLARSSL_CIPHER_AES_192_GCM,
POLARSSL_CIPHER_AES_256_GCM,
#endif /* defined(POLARSSL_GCM_C) */
#endif /* defined(POLARSSL_AES_C) */
#if defined(POLARSSL_ARC4_C)
@ -157,6 +163,8 @@ const cipher_info_t *cipher_info_from_type( const cipher_type_t cipher_type )
#if defined(POLARSSL_GCM_C)
case POLARSSL_CIPHER_AES_128_GCM:
return &aes_128_gcm_info;
case POLARSSL_CIPHER_AES_192_GCM:
return &aes_192_gcm_info;
case POLARSSL_CIPHER_AES_256_GCM:
return &aes_256_gcm_info;
#endif /* defined(POLARSSL_GCM_C) */
@ -293,6 +301,8 @@ const cipher_info_t *cipher_info_from_string( const char *cipher_name )
#if defined(POLARSSL_GCM_C)
if( !strcasecmp( "AES-128-GCM", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_AES_128_GCM );
if( !strcasecmp( "AES-192-GCM", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_AES_192_GCM );
if( !strcasecmp( "AES-256-GCM", cipher_name ) )
return cipher_info_from_type( POLARSSL_CIPHER_AES_256_GCM );
#endif
@ -396,31 +406,60 @@ int cipher_setkey( cipher_context_t *ctx, const unsigned char *key,
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
}
int cipher_reset( cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len,
const unsigned char *ad, size_t ad_len )
int cipher_set_iv( cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len )
{
size_t actual_iv_size;
if( NULL == ctx || NULL == ctx->cipher_info || NULL == iv )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
if( ctx->cipher_info->accepts_variable_iv_size )
actual_iv_size = iv_len;
else
actual_iv_size = ctx->cipher_info->iv_size;
memcpy( ctx->iv, iv, actual_iv_size );
ctx->iv_size = actual_iv_size;
return 0;
}
int cipher_reset( cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
ctx->unprocessed_len = 0;
return 0;
}
#if defined(POLARSSL_CIPHER_MODE_AEAD)
int cipher_update_ad( cipher_context_t *ctx,
const unsigned char *ad, size_t ad_len )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
#if defined(POLARSSL_GCM_C)
if( POLARSSL_MODE_GCM == ctx->cipher_info->mode )
{
return gcm_starts( ctx->cipher_ctx, ctx->operation,
iv, iv_len, ad, ad_len );
}
#else
((void) ad);
((void) ad_len);
((void) iv_len);
#endif
/* Make sure we're called right after cipher_reset() */
if( ((gcm_context *) ctx->cipher_ctx)->len != 0 ||
((gcm_context *) ctx->cipher_ctx)->add_len != 0 )
{
return POLARSSL_ERR_CIPHER_FEATURE_UNAVAILABLE;
}
memcpy( ctx->iv, iv, cipher_get_iv_size( ctx ) );
return gcm_starts( ctx->cipher_ctx, ctx->operation,
ctx->iv, ctx->iv_size, ad, ad_len );
}
#endif
return 0;
}
#endif /* POLARSSL_CIPHER_MODE_AEAD */
int cipher_update( cipher_context_t *ctx, const unsigned char *input, size_t ilen,
unsigned char *output, size_t *olen )
@ -747,8 +786,7 @@ static int get_no_padding( unsigned char *input, size_t input_len,
}
int cipher_finish( cipher_context_t *ctx,
unsigned char *output, size_t *olen,
unsigned char *tag, size_t tag_len )
unsigned char *output, size_t *olen )
{
int ret = 0;
@ -767,10 +805,6 @@ int cipher_finish( cipher_context_t *ctx,
#if defined(POLARSSL_GCM_C)
if( POLARSSL_MODE_GCM == ctx->cipher_info->mode )
{
unsigned char check_tag[16];
size_t i;
int diff;
if( 0 != ( ret = gcm_update( ctx->cipher_ctx,
ctx->unprocessed_len, ctx->unprocessed_data,
output ) ) )
@ -780,29 +814,8 @@ int cipher_finish( cipher_context_t *ctx,
*olen += ctx->unprocessed_len;
if( 0 != ( ret = gcm_finish( ctx->cipher_ctx, check_tag, tag_len ) ) )
return( ret );
/* On encryption, write the tag */
if( POLARSSL_ENCRYPT == ctx->operation )
{
if( tag_len != 0 )
memcpy( tag, check_tag, tag_len );
return( 0 );
}
/* On decryption, check the tag (in "constant-time") */
for( diff = 0, i = 0; i < tag_len; i++ )
diff |= tag[i] ^ check_tag[i];
if( diff != 0 )
return( POLARSSL_ERR_GCM_AUTH_FAILED );
return( 0 );
}
#else
((void) tag);
((void) tag_len);
#endif
if( POLARSSL_MODE_CBC == ctx->cipher_info->mode )
@ -900,6 +913,63 @@ int cipher_set_padding_mode( cipher_context_t *ctx, cipher_padding_t mode )
return 0;
}
#if defined(POLARSSL_CIPHER_MODE_AEAD)
int cipher_write_tag( cipher_context_t *ctx,
unsigned char *tag, size_t tag_len )
{
if( NULL == ctx || NULL == ctx->cipher_info || NULL == tag )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
if( POLARSSL_ENCRYPT != ctx->operation )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
#if defined(POLARSSL_GCM_C)
if( POLARSSL_MODE_GCM == ctx->cipher_info->mode )
return gcm_finish( ctx->cipher_ctx, tag, tag_len );
#endif
return 0;
}
int cipher_check_tag( cipher_context_t *ctx,
const unsigned char *tag, size_t tag_len )
{
int ret;
if( NULL == ctx || NULL == ctx->cipher_info ||
POLARSSL_DECRYPT != ctx->operation )
{
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
}
#if defined(POLARSSL_GCM_C)
if( POLARSSL_MODE_GCM == ctx->cipher_info->mode )
{
unsigned char check_tag[16];
size_t i;
int diff;
if( tag_len > sizeof( check_tag ) )
return POLARSSL_ERR_CIPHER_BAD_INPUT_DATA;
if( 0 != ( ret = gcm_finish( ctx->cipher_ctx, check_tag, tag_len ) ) )
return( ret );
/* Check the tag in "constant-time" */
for( diff = 0, i = 0; i < tag_len; i++ )
diff |= tag[i] ^ check_tag[i];
if( diff != 0 )
return( POLARSSL_ERR_GCM_AUTH_FAILED );
return( 0 );
}
#endif
return( 0 );
}
#endif /* POLARSSL_CIPHER_MODE_AEAD */
#if defined(POLARSSL_SELF_TEST)
#include <stdio.h>

49
library/cipher_wrap.c
View file

@ -150,6 +150,7 @@ const cipher_info_t aes_128_cbc_info = {
128,
"AES-128-CBC",
16,
0,
16,
&aes_info
};
@ -160,6 +161,7 @@ const cipher_info_t aes_192_cbc_info = {
192,
"AES-192-CBC",
16,
0,
16,
&aes_info
};
@ -170,6 +172,7 @@ const cipher_info_t aes_256_cbc_info = {
256,
"AES-256-CBC",
16,
0,
16,
&aes_info
};
@ -181,6 +184,7 @@ const cipher_info_t aes_128_cfb128_info = {
128,
"AES-128-CFB128",
16,
0,
16,
&aes_info
};
@ -191,6 +195,7 @@ const cipher_info_t aes_192_cfb128_info = {
192,
"AES-192-CFB128",
16,
0,
16,
&aes_info
};
@ -201,6 +206,7 @@ const cipher_info_t aes_256_cfb128_info = {
256,
"AES-256-CFB128",
16,
0,
16,
&aes_info
};
@ -213,6 +219,7 @@ const cipher_info_t aes_128_ctr_info = {
128,
"AES-128-CTR",
16,
0,
16,
&aes_info
};
@ -223,6 +230,7 @@ const cipher_info_t aes_192_ctr_info = {
192,
"AES-192-CTR",
16,
0,
16,
&aes_info
};
@ -233,6 +241,7 @@ const cipher_info_t aes_256_ctr_info = {
256,
"AES-256-CTR",
16,
0,
16,
&aes_info
};
@ -271,7 +280,19 @@ const cipher_info_t aes_128_gcm_info = {
POLARSSL_MODE_GCM,
128,
"AES-128-GCM",
0,
12,
1,
16,
&gcm_aes_info
};
const cipher_info_t aes_192_gcm_info = {
POLARSSL_CIPHER_AES_192_GCM,
POLARSSL_MODE_GCM,
192,
"AES-192-GCM",
12,
1,
16,
&gcm_aes_info
};
@ -281,7 +302,8 @@ const cipher_info_t aes_256_gcm_info = {
POLARSSL_MODE_GCM,
256,
"AES-256-GCM",
0,
12,
1,
16,
&gcm_aes_info
};
@ -373,6 +395,7 @@ const cipher_info_t camellia_128_cbc_info = {
128,
"CAMELLIA-128-CBC",
16,
0,
16,
&camellia_info
};
@ -383,6 +406,7 @@ const cipher_info_t camellia_192_cbc_info = {
192,
"CAMELLIA-192-CBC",
16,
0,
16,
&camellia_info
};
@ -393,6 +417,7 @@ const cipher_info_t camellia_256_cbc_info = {
256,
"CAMELLIA-256-CBC",
16,
0,
16,
&camellia_info
};
@ -404,6 +429,7 @@ const cipher_info_t camellia_128_cfb128_info = {
128,
"CAMELLIA-128-CFB128",
16,
0,
16,
&camellia_info
};
@ -414,6 +440,7 @@ const cipher_info_t camellia_192_cfb128_info = {
192,
"CAMELLIA-192-CFB128",
16,
0,
16,
&camellia_info
};
@ -424,6 +451,7 @@ const cipher_info_t camellia_256_cfb128_info = {
256,
"CAMELLIA-256-CFB128",
16,
0,
16,
&camellia_info
};
@ -436,6 +464,7 @@ const cipher_info_t camellia_128_ctr_info = {
128,
"CAMELLIA-128-CTR",
16,
0,
16,
&camellia_info
};
@ -446,6 +475,7 @@ const cipher_info_t camellia_192_ctr_info = {
192,
"CAMELLIA-192-CTR",
16,
0,
16,
&camellia_info
};
@ -456,6 +486,7 @@ const cipher_info_t camellia_256_ctr_info = {
256,
"CAMELLIA-256-CTR",
16,
0,
16,
&camellia_info
};
@ -581,6 +612,7 @@ const cipher_info_t des_cbc_info = {
POLARSSL_KEY_LENGTH_DES,
"DES-CBC",
8,
0,
8,
&des_info
};
@ -603,6 +635,7 @@ const cipher_info_t des_ede_cbc_info = {
POLARSSL_KEY_LENGTH_DES_EDE,
"DES-EDE-CBC",
8,
0,
8,
&des_ede_info
};
@ -625,6 +658,7 @@ const cipher_info_t des_ede3_cbc_info = {
POLARSSL_KEY_LENGTH_DES_EDE3,
"DES-EDE3-CBC",
8,
0,
8,
&des_ede3_info
};
@ -709,6 +743,7 @@ const cipher_info_t blowfish_cbc_info = {
128,
"BLOWFISH-CBC",
8,
0,
8,
&blowfish_info
};
@ -720,6 +755,7 @@ const cipher_info_t blowfish_cfb64_info = {
128,
"BLOWFISH-CFB64",
8,
0,
8,
&blowfish_info
};
@ -732,6 +768,7 @@ const cipher_info_t blowfish_ctr_info = {
128,
"BLOWFISH-CTR",
8,
0,
8,
&blowfish_info
};
@ -749,7 +786,11 @@ static int arc4_crypt_stream_wrap( void *ctx, size_t length,
static int arc4_setkey_wrap( void *ctx, const unsigned char *key,
unsigned int key_length )
{
arc4_setup( (arc4_context *) ctx, key, key_length );
/* we get key_length in bits, arc4 expects it in bytes */
if( key_length % 8 != 0)
return( POLARSSL_ERR_CIPHER_BAD_INPUT_DATA );
arc4_setup( (arc4_context *) ctx, key, key_length / 8 );
return( 0 );
}
@ -781,6 +822,7 @@ const cipher_info_t arc4_128_info = {
128,
"ARC4-128",
0,
0,
1,
&arc4_base_info
};
@ -834,6 +876,7 @@ const cipher_info_t null_cipher_info = {
0,
"NULL",
0,
0,
1,
&null_base_info
};

10
library/pkcs12.c
View file

@ -184,7 +184,10 @@ int pkcs12_pbe( asn1_buf *pbe_params, int mode,
if( ( ret = cipher_setkey( &cipher_ctx, key, keylen, mode ) ) != 0 )
goto exit;
if( ( ret = cipher_reset( &cipher_ctx, iv, 0, NULL, 0 ) ) != 0 )
if( ( ret = cipher_set_iv( &cipher_ctx, iv, cipher_info->iv_size ) ) != 0 )
goto exit;
if( ( ret = cipher_reset( &cipher_ctx ) ) != 0 )
goto exit;
if( ( ret = cipher_update( &cipher_ctx, data, len,
@ -193,11 +196,8 @@ int pkcs12_pbe( asn1_buf *pbe_params, int mode,
goto exit;
}
if( ( ret = cipher_finish( &cipher_ctx, output + olen, &olen, NULL, 0 ) )
!= 0 )
{
if( ( ret = cipher_finish( &cipher_ctx, output + olen, &olen ) ) != 0 )
ret = POLARSSL_ERR_PKCS12_PASSWORD_MISMATCH;
}
exit:
cipher_free_ctx( &cipher_ctx );

10
library/pkcs5.c
View file

@ -187,7 +187,10 @@ int pkcs5_pbes2( asn1_buf *pbe_params, int mode,
if( ( ret = cipher_setkey( &cipher_ctx, key, keylen, mode ) ) != 0 )
goto exit;
if( ( ret = cipher_reset( &cipher_ctx, iv, 0, NULL, 0 ) ) != 0 )
if( ( ret = cipher_set_iv( &cipher_ctx, iv, enc_scheme_params.len ) ) != 0 )
goto exit;
if( ( ret = cipher_reset( &cipher_ctx ) ) != 0 )
goto exit;
if( ( ret = cipher_update( &cipher_ctx, data, datalen,
@ -196,11 +199,8 @@ int pkcs5_pbes2( asn1_buf *pbe_params, int mode,
goto exit;
}
if( ( ret = cipher_finish( &cipher_ctx, output + olen, &olen, NULL, 0 ) )
!= 0 )
{
if( ( ret = cipher_finish( &cipher_ctx, output + olen, &olen ) ) != 0 )
ret = POLARSSL_ERR_PKCS5_PASSWORD_MISMATCH;
}
exit:
md_free_ctx( &md_ctx );

14
programs/aes/crypt_and_hash.c
View file

@ -306,7 +306,12 @@ int main( int argc, char *argv[] )
fprintf( stderr, "cipher_setkey() returned error\n");
goto exit;
}
if( cipher_reset( &cipher_ctx, IV, 16, NULL, 0 ) != 0 )
if( cipher_set_iv( &cipher_ctx, IV, 16 ) != 0 )
{
fprintf( stderr, "cipher_set_iv() returned error\n");
goto exit;
}
if( cipher_reset( &cipher_ctx ) != 0 )
{
fprintf( stderr, "cipher_reset() returned error\n");
goto exit;
@ -338,7 +343,7 @@ int main( int argc, char *argv[] )
}
}
if( cipher_finish( &cipher_ctx, output, &olen, NULL, 0 ) != 0 )
if( cipher_finish( &cipher_ctx, output, &olen ) != 0 )
{
fprintf( stderr, "cipher_finish() returned error\n" );
goto exit;
@ -424,7 +429,8 @@ int main( int argc, char *argv[] )
cipher_setkey( &cipher_ctx, digest, cipher_info->key_length,
POLARSSL_DECRYPT );
cipher_reset( &cipher_ctx, IV, 16, NULL, 0 );
cipher_set_iv( &cipher_ctx, IV, 16 );
cipher_reset( &cipher_ctx );
md_hmac_starts( &md_ctx, digest, 32 );
@ -455,7 +461,7 @@ int main( int argc, char *argv[] )
/*
* Write the final block of data
*/
cipher_finish( &cipher_ctx, output, &olen, NULL, 0 );
cipher_finish( &cipher_ctx, output, &olen );
if( fwrite( output, 1, olen, fout ) != olen )
{

28
tests/suites/test_suite_cipher.aes.data
View file

@ -764,3 +764,31 @@ enc_dec_buf_multipart:POLARSSL_CIPHER_AES_256_CBC:256:17:6:
AES Encrypt and decrypt 32 bytes in multiple parts 1
depends_on:POLARSSL_AES_C
enc_dec_buf_multipart:POLARSSL_CIPHER_AES_256_CBC:256:16:16:
AES Decrypt test vector #0
depends_on:POLARSSL_AES_C:POLARSSL_CIPHER_PADDING_PKCS7
decrypt_test_vec:POLARSSL_CIPHER_AES_128_CBC:POLARSSL_PADDING_PKCS7:"ffffffffe00000000000000000000000":"00000000000000000000000000000000":"23f710842b9bb9c32f26648c786807ca":"00000000000000000000000000000000":"":"":POLARSSL_ERR_CIPHER_INVALID_PADDING:0
AES Decrypt test vector #1
depends_on:POLARSSL_AES_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_CBC:POLARSSL_PADDING_NONE:"ffffffffe00000000000000000000000":"00000000000000000000000000000000":"23f710842b9bb9c32f26648c786807ca":"00000000000000000000000000000000":"":"":0:0
AES Decrypt test vector #2
depends_on:POLARSSL_AES_C
decrypt_test_vec:POLARSSL_CIPHER_AES_192_CBC:POLARSSL_PADDING_NONE:"000000000000000000000000000000000000000000000000":"00000000000000000000000000000000":"707b1dbb0ffa40ef7d95def421233fae":"fffffffff80000000000000000000000":"":"":0:0
AES Decrypt test vector #3
depends_on:POLARSSL_AES_C
decrypt_test_vec:POLARSSL_CIPHER_AES_256_CBC:POLARSSL_PADDING_NONE:"0000000000000000000000000000000000000000000000000000000000000000":"00000000000000000000000000000000":"49af6b372135acef10132e548f217b17":"ff000000000000000000000000000000":"":"":0:0
AES Decrypt test vector #4
depends_on:POLARSSL_AES_C:POLARSSL_CIPHER_MODE_CFB
decrypt_test_vec:POLARSSL_CIPHER_AES_128_CFB128:-1:"fffffffe000000000000000000000000":"00000000000000000000000000000000":"1114bc2028009b923f0b01915ce5e7c4":"00000000000000000000000000000000":"":"":0:0:
AES Decrypt test vector #5
depends_on:POLARSSL_AES_C:POLARSSL_CIPHER_MODE_CFB
decrypt_test_vec:POLARSSL_CIPHER_AES_192_CFB128:-1:"ffffffffffffffffffffffffffffffffffffffffffe00000":"00000000000000000000000000000000":"60136703374f64e860b48ce31f930716":"00000000000000000000000000000000":"":"":0:0
AES Decrypt test vector #6
depends_on:POLARSSL_AES_C:POLARSSL_CIPHER_MODE_CFB
decrypt_test_vec:POLARSSL_CIPHER_AES_128_CFB128:-1:"ffffffffff800000000000000000000000000000000000000000000000000000":"00000000000000000000000000000000":"be66cfea2fecd6bf0ec7b4352c99bcaa":"00000000000000000000000000000000":"":"":0:0

135
tests/suites/test_suite_cipher.function
View file

@ -1,5 +1,9 @@
/* BEGIN_HEADER */
#include <polarssl/cipher.h>
#if defined(POLARSSL_GCM_C)
#include <polarssl/gcm.h>
#endif
/* END_HEADER */
/* BEGIN_DEPENDENCIES
@ -58,8 +62,16 @@ void enc_dec_buf( int cipher_id, char *cipher_string, int key_len,
TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx_enc, pad_mode ) );
}
TEST_ASSERT( 0 == cipher_reset( &ctx_dec, iv, 16, ad, 13 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_enc, iv, 16, ad, 13 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx_enc, iv, 16 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_dec ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_enc ) );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_update_ad( &ctx_dec, ad, 13 ) );
TEST_ASSERT( 0 == cipher_update_ad( &ctx_enc, ad, 13 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* encode length number of bytes from inbuf */
TEST_ASSERT( 0 == cipher_update( &ctx_enc, inbuf, length, encbuf, &outlen ) );
@ -70,10 +82,13 @@ void enc_dec_buf( int cipher_id, char *cipher_string, int key_len,
total_len < length &&
total_len + cipher_get_block_size( &ctx_enc ) > length ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + outlen, &outlen,
tag, 16 ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + outlen, &outlen ) );
total_len += outlen;
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_write_tag( &ctx_enc, tag, 16 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
TEST_ASSERT( total_len == length ||
( total_len % cipher_get_block_size( &ctx_enc ) == 0 &&
total_len > length &&
@ -88,10 +103,13 @@ void enc_dec_buf( int cipher_id, char *cipher_string, int key_len,
total_len < length &&
total_len + cipher_get_block_size( &ctx_dec ) >= length ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen,
tag, 16 ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen ) );
total_len += outlen;
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_check_tag( &ctx_dec, tag, 16 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
TEST_ASSERT( total_len == length );
TEST_ASSERT( 0 == memcmp(inbuf, decbuf, length) );
@ -133,11 +151,15 @@ void enc_fail( int cipher_id, int pad_mode, int key_len,
TEST_ASSERT( 0 == cipher_init_ctx( &ctx, cipher_info ) );
TEST_ASSERT( 0 == cipher_setkey( &ctx, key, key_len, POLARSSL_ENCRYPT ) );
TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx, pad_mode ) );
TEST_ASSERT( 0 == cipher_reset( &ctx, iv, 16, NULL, 0 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx, iv, 16 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx ) );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_update_ad( &ctx, NULL, 0 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* encode length number of bytes from inbuf */
TEST_ASSERT( 0 == cipher_update( &ctx, inbuf, length, encbuf, &outlen ) );
TEST_ASSERT( ret == cipher_finish( &ctx, encbuf + outlen, &outlen, NULL, 0 ) );
TEST_ASSERT( ret == cipher_finish( &ctx, encbuf + outlen, &outlen ) );
/* done */
TEST_ASSERT( 0 == cipher_free_ctx( &ctx ) );
@ -166,7 +188,7 @@ void dec_empty_buf()
memset( encbuf, 0, 64 );
memset( decbuf, 0, 64 );
/* Initialise enc and dec contexts */
/* Initialise context */
cipher_info = cipher_info_from_type( POLARSSL_CIPHER_AES_128_CBC );
TEST_ASSERT( NULL != cipher_info);
@ -174,13 +196,19 @@ void dec_empty_buf()
TEST_ASSERT( 0 == cipher_setkey( &ctx_dec, key, 128, POLARSSL_DECRYPT ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_dec, iv, 16, NULL, 0 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_dec ) );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_update_ad( &ctx_dec, NULL, 0 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* decode 0-byte string */
TEST_ASSERT( 0 == cipher_update( &ctx_dec, encbuf, 0, decbuf, &outlen ) );
TEST_ASSERT( 0 == outlen );
TEST_ASSERT( POLARSSL_ERR_CIPHER_FULL_BLOCK_EXPECTED == cipher_finish(
&ctx_dec, decbuf + outlen, &outlen, NULL, 0 ) );
&ctx_dec, decbuf + outlen, &outlen ) );
TEST_ASSERT( 0 == outlen );
TEST_ASSERT( 0 == cipher_free_ctx( &ctx_dec ) );
@ -228,8 +256,16 @@ void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val,
TEST_ASSERT( 0 == cipher_setkey( &ctx_dec, key, key_len, POLARSSL_DECRYPT ) );
TEST_ASSERT( 0 == cipher_setkey( &ctx_enc, key, key_len, POLARSSL_ENCRYPT ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_dec, iv, 16, NULL, 0 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_enc, iv, 16, NULL, 0 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx_dec, iv, 16 ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx_enc, iv, 16 ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_dec ) );
TEST_ASSERT( 0 == cipher_reset( &ctx_enc ) );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_update_ad( &ctx_dec, NULL, 0 ) );
TEST_ASSERT( 0 == cipher_update_ad( &ctx_enc, NULL, 0 ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* encode length number of bytes from inbuf */
TEST_ASSERT( 0 == cipher_update( &ctx_enc, inbuf, first_length, encbuf, &outlen ) );
@ -241,8 +277,7 @@ void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val,
totaloutlen < length &&
totaloutlen + cipher_get_block_size( &ctx_enc ) > length ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + totaloutlen, &outlen,
NULL, 0 ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_enc, encbuf + totaloutlen, &outlen ) );
totaloutlen += outlen;
TEST_ASSERT( totaloutlen == length ||
( totaloutlen % cipher_get_block_size( &ctx_enc ) == 0 &&
@ -258,8 +293,7 @@ void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val,
totaloutlen < length &&
totaloutlen + cipher_get_block_size( &ctx_dec ) >= length ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen,
NULL, 0 ) );
TEST_ASSERT( 0 == cipher_finish( &ctx_dec, decbuf + outlen, &outlen ) );
totaloutlen += outlen;
TEST_ASSERT( totaloutlen == length );
@ -271,6 +305,73 @@ void enc_dec_buf_multipart( int cipher_id, int key_len, int first_length_val,
}
/* END_CASE */
/* BEGIN_CASE */
void decrypt_test_vec( int cipher_id, int pad_mode,
char *hex_key, char *hex_iv,
char *hex_cipher, char *hex_clear,
char *hex_ad, char *hex_tag,
int finish_result, int tag_result )
{
unsigned char key[50];
unsigned char iv[50];
unsigned char cipher[200];
unsigned char clear[200];
unsigned char ad[200];
unsigned char tag[20];
size_t key_len, iv_len, cipher_len, clear_len, ad_len, tag_len;
cipher_context_t ctx;
unsigned char output[200];
size_t outlen, total_len;
memset( key, 0x00, sizeof( key ) );
memset( iv, 0x00, sizeof( iv ) );
memset( cipher, 0x00, sizeof( cipher ) );
memset( clear, 0x00, sizeof( clear ) );
memset( ad, 0x00, sizeof( ad ) );
memset( tag, 0x00, sizeof( tag ) );
memset( output, 0x00, sizeof( output ) );
key_len = unhexify( key, hex_key );
iv_len = unhexify( iv, hex_iv );
cipher_len = unhexify( cipher, hex_cipher );
clear_len = unhexify( clear, hex_clear );
ad_len = unhexify( ad, hex_ad );
tag_len = unhexify( tag, hex_tag );
/* Prepare context */
TEST_ASSERT( 0 == cipher_init_ctx( &ctx,
cipher_info_from_type( cipher_id ) ) );
TEST_ASSERT( 0 == cipher_setkey( &ctx, key, 8 * key_len, POLARSSL_DECRYPT ) );
if( pad_mode != -1 )
TEST_ASSERT( 0 == cipher_set_padding_mode( &ctx, pad_mode ) );
TEST_ASSERT( 0 == cipher_set_iv( &ctx, iv, iv_len ) );
TEST_ASSERT( 0 == cipher_reset( &ctx ) );
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( 0 == cipher_update_ad( &ctx, ad, ad_len ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* decode buffer and check tag */
total_len = 0;
TEST_ASSERT( 0 == cipher_update( &ctx, cipher, cipher_len, output, &outlen ) );
total_len += outlen;
TEST_ASSERT( finish_result == cipher_finish( &ctx, output + outlen,
&outlen ) );
total_len += outlen;
#if defined(POLARSSL_CIPHER_MODE_AEAD)
TEST_ASSERT( tag_result == cipher_check_tag( &ctx, tag, tag_len ) );
#endif /* POLARSSL_CIPHER_MODE_AEAD */
/* check plaintext only if everything went fine */
if( 0 == finish_result && 0 == tag_result )
{
TEST_ASSERT( total_len == clear_len );
TEST_ASSERT( 0 == memcmp( output, clear, clear_len ) );
}
cipher_free_ctx( &ctx );
}
/* END_CASE */
/* BEGIN_CASE */
void set_padding( int cipher_id, int pad_mode, int ret )
{

36
tests/suites/test_suite_cipher.gcm.data
View file

@ -108,3 +108,39 @@ enc_dec_buf_multipart:POLARSSL_CIPHER_AES_128_GCM:128:17:6
AES 128 GCM Encrypt and decrypt 32 bytes in multiple parts 1
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
enc_dec_buf_multipart:POLARSSL_CIPHER_AES_128_GCM:128:16:16
AES 128 GCM Decrypt test vector #1
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"d785dafea3e966731ef6fc6202262584":"d91a46205ee94058b3b8403997592dd2":"":"":"":"3b92a17c1b9c3578a68cffea5a5b6245":0:0
AES 128 GCM Decrypt test vector #2
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"9ab5c8ca905b5fe50461f4a68941144b":"96dd3927a96e16123f2e9d6b367d303f":"":"":"":"6e0c53ef":0:0
AES 128 GCM Decrypt test vector #3
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"b5fc7af605721a9cfe61c1ee6a4b3e22":"6b757d4055823d1035d01077666037d6":"":"":"":"e8c09ddd":0:POLARSSL_ERR_GCM_AUTH_FAILED
AES 128 GCM Decrypt test vector #4
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"03c0b4a6e508a8490db0d086a82c9db7":"ac52f6c1a05030321fa39f87e89fdb5e":"":"":"33316ca79d10a79f4fd038593e8eef09625089dc4e0ffe4bc1f2871554fa6666ab3e7fe7885edef694b410456f3ec0e513bb25f1b48d95e4820c5972c1aabb25c84c08566002dadc36df334c1ce86847964a122016d389ac873bca8c335a7a99bcef91e1b985ae5d488a2d7f78b4bf14e0c2dc715e814f4e24276057cf668172":"756292d8b4653887edef51679b161812":0:POLARSSL_ERR_GCM_AUTH_FAILED
AES 128 GCM Decrypt test vector #5
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"2bc73fba942ff105823b5dccf6befb1c":"902c3e3b69b1ef8395d7281ff74cce38":"":"":"4adec0b4ac00325a860044d9f9519daa4f7c163229a75819b0fd7d8e23319f030e61dfa8eadabff42ea27bc36bdb6cad249e801ca631b656836448b7172c11126bad2781e6a1aa4f62c4eda53409408b008c057e0b81215cc13ddabbb8f1915f4bbab854f8b00763a530ad5055d265778cd3080d0bd35b76a329bdd5b5a2d268":"ebdd7c8e87fe733138a433543542d1":0:0
AES 128 GCM Decrypt test vector #6
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"0dd358bc3f992f26e81e3a2f3aa2d517":"d8c750bb443ee1a169dfe97cfe4d855b":"87cc4fd75788c9d5cc83bae5d764dd249d178ab23224049795d4288b5ed9ea3f317068a39a7574b300c8544226e87b08e008fbe241d094545c211d56ac44437d41491a438272738968c8d371aa7787b5f606c8549a9d868d8a71380e9657d3c0337979feb01de5991fc1470dfc59eb02511efbbff3fcb479a862ba3844a25aaa":"77949b29f085bb3abb71a5386003811233056d3296eb093370f7777dadd306d93d59dcb9754d3857cf2758091ba661f845ef0582f6ae0e134328106f0d5d16b541cd74fdc756dc7b53f4f8a194daeea9369ebb1630c01ccb307b848e9527da20a39898d748fd59206f0b79d0ed946a8958033a45bd9ae673518b32606748eb65":"":"a81d13973baa22a751833d7d3f94b3b1":0:0
AES 128 GCM Decrypt test vector #7
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"9a433c612d7e1bdff881e4d63ba8b141":"8b670cf31f470f79a6c0b79e73863ca1":"ce10758332f423228b5e4ae31efda7677586934a1d8f05d9b7a0dc4e2010ec3eaacb71a527a5fff8e787d75ebd24ad163394c891b33477ed9e2a2d853c364cb1c5d0bc317fcaf4010817dbe5f1fd1037c701b291b3a66b164bc818bf5c00a4c210a1671faa574d74c7f3543f6c09aaf117e12e2eb3dae55edb1cc5b4086b617d":"":"":"8526fd25daf890e79946a205b698f287":0:POLARSSL_ERR_GCM_AUTH_FAILED
AES 128 GCM Decrypt test vector #8
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"69eedf3777e594c30e94e9c5e2bce467":"a3330638a809ba358d6c098e4342b81e":"5114e9983c96fecec3f7304ca42f52aa16cb7c6aadfb62ad537c93a3188835ca0703dad34c73cf96435b668b68a7a1d056931959316e8d3ab956bf64c4e07479c7767f9d488b0c0c351333ccf400b7e0be19a0fd173e3f2a1ae313f27e516952260fd2da9ab9daca478ebb93cd07d0b7503b32364d8e308d904d966c58f226bb":"208e6321238bf5c6e2ef55a4b8f531cbbfb0d77374fe32df6dd663486cf79beeed39bb6910c3c78dd0cc30707a0a12b226b2d06024db25dcd8a4e620f009cafa5242121e864c7f3f4360aaf1e9d4e548d99615156f156008418c1c41ff2bbc007cecf8f209c73203e6df89b32871de637b3d6af2e277d146ae03f3404d387b77":"df4e3f2b47cf0e8590228fcf9913fb8a5eb9751bba318fd2d57be68c7e788e04fabf303699b99f26313d1c4956105cd2817aad21b91c28f3b9251e9c0b354490fa5abfcea0065aa3cc9b96772eb8af06a1a9054bf12d3ae698dfb01a13f989f8b8a4bb61686cf3adf58f05873a24d403a62a092290c2481e4159588fea6b9a09":"5de3068e1e20eed469265000077b1db9":0:0
AES 128 GCM Decrypt test vector #9
depends_on:POLARSSL_AES_C:POLARSSL_GCM_C
decrypt_test_vec:POLARSSL_CIPHER_AES_128_GCM:-1:"45cc35311eedf0ba093bf901931a7036":"fed5084de3c348f5a0adf4c2fd4e848a":"5dc8d7525eaad035c19714ae1b1e538cb66a4089027245351e0ad9297410fb3a0c1155407c10a8bb95a9ca624a9c9925dac003ee78926c6e90ff4ccdba10e8a78bda1c4478162a0e302de5ff05fb0f94c89c3c7429fb94828bdcd97d21333c2ee72963ee6f056ce272b8bab007e653a42b01d1d2041ba627f169c8c0d32e6dae":"":"6e210914e4aed188d576f5ad7fc7e4cf7dd8d82f34ea3bcbdb7267cfd9045f806978dbff3460c4e8ff8c4edb6ad2edba405a8d915729d89aab2116b36a70b54f5920a97f5a571977e0329eda6c696749be940eabfc6d8b0bbd6fbdb87657b3a7695da9f5d3a7384257f20e0becd8512d3705cc246ee6ca1e610921cf92603d79":"266a895fc21da5176b44b446d7d1921d":0:POLARSSL_ERR_GCM_AUTH_FAILED

1
tests/suites/test_suite_gcm.function
View file

@ -95,6 +95,7 @@ void gcm_decrypt_and_verify( char *hex_key_string, char *hex_src_string,
}
else
{
TEST_ASSERT( ret == 0 );
hexify( dst_str, output, pt_len );
TEST_ASSERT( strcmp( (char *) dst_str, pt_result ) == 0 );