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Move *_pemify() function to PEM module

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This commit is contained in:
Paul Bakker 2013-09-15 20:03:26 +02:00
parent 40ce79f1e6
commit 77e23fb0e0
8 changed files with 111 additions and 185 deletions
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22
include/polarssl/pem.h
View file

@ -88,13 +88,33 @@ void pem_init( pem_context *ctx );
* the decrypted text starts with an ASN.1 sequence of
* appropriate length
*
* \return 0 on success, ior a specific PEM error code
* \return 0 on success, or a specific PEM error code
*/
int pem_read_buffer( pem_context *ctx, const char *header, const char *footer,
const unsigned char *data,
const unsigned char *pwd,
size_t pwdlen, size_t *use_len );
/**
* \brief Write a buffer of PEM information from a DER encoded
* buffer.
*
* \param header header string to write
* \param footer footer string to write
* \param der_data DER data to write
* \param der_len length of the DER data
* \param buf buffer to write to
* \param buf_len length of output buffer
* \param olen total length written / required (if buf_len is not enough)
*
* \return 0 on success, or a specific PEM or BASE64 error code. On
* POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL olen is the required
* size.
*/
int pem_write_buffer( const char *header, const char *footer,
const unsigned char *der_data, size_t der_len,
unsigned char *buf, size_t buf_len, size_t *olen );
/**
* \brief PEM context memory freeing
*

4
include/polarssl/pk.h
View file

@ -477,7 +477,7 @@ int pk_write_key_der( pk_context *pk, unsigned char *buf, size_t size );
*/
int pk_write_pubkey_der( pk_context *key, unsigned char *buf, size_t size );
#if defined(POLARSSL_BASE64_C)
#if defined(POLARSSL_PEM_C)
/**
* \brief Write a public key to a PEM string
*
@ -499,7 +499,7 @@ int pk_write_pubkey_pem( pk_context *key, unsigned char *buf, size_t size );
* \return 0 successful, or a specific error code
*/
int pk_write_key_pem( pk_context *key, unsigned char *buf, size_t size );
#endif /* POLARSSL_BASE64_C */
#endif /* POLARSSL_PEM_C */
#endif /* POLARSSL_PK_WRITE_C */
/*

4
include/polarssl/x509write.h
View file

@ -414,7 +414,7 @@ int x509write_csr_der( x509write_csr *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
#if defined(POLARSSL_BASE64_C)
#if defined(POLARSSL_PEM_C)
/**
* \brief Write a built up certificate to a X509 PEM string
*
@ -455,7 +455,7 @@ int x509write_crt_pem( x509write_cert *ctx, unsigned char *buf, size_t size,
int x509write_csr_pem( x509write_csr *ctx, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
#endif /* POLARSSL_BASE64_C */
#endif /* POLARSSL_PEM_C */
#ifdef __cplusplus
}

50
library/pem.c
View file

@ -363,6 +363,56 @@ int pem_read_buffer( pem_context *ctx, const char *header, const char *footer,
return( 0 );
}
int pem_write_buffer( const char *header, const char *footer,
const unsigned char *der_data, size_t der_len,
unsigned char *buf, size_t buf_len, size_t *olen )
{
int ret;
unsigned char *encode_buf, *c, *p = buf;
size_t len = 0, use_len = 0;
size_t add_len = strlen( header ) + strlen( footer ) + ( use_len / 64 ) + 1;
base64_encode( NULL, &use_len, der_data, der_len );
if( use_len + add_len > buf_len )
{
*olen = use_len + add_len;
return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
}
if( ( encode_buf = polarssl_malloc( use_len ) ) == NULL )
return( POLARSSL_ERR_PEM_MALLOC_FAILED );
if( ( ret = base64_encode( encode_buf, &use_len, der_data,
der_len ) ) != 0 )
{
polarssl_free( encode_buf );
return( ret );
}
memcpy( p, header, strlen( header ) );
p += strlen( header );
c = encode_buf;
while( use_len )
{
len = ( use_len > 64 ) ? 64 : use_len;
memcpy( p, c, len );
use_len -= len;
p += len;
c += len;
*p++ = '\n';
}
memcpy( p, footer, strlen( footer ) );
p += strlen( footer );
*p++ = '\0';
*olen = p - buf;
polarssl_free( encode_buf );
return( 0 );
}
void pem_free( pem_context *ctx )
{
if( ctx->buf )

63
library/pkwrite.c
View file

@ -40,8 +40,8 @@
#if defined(POLARSSL_ECDSA_C)
#include "polarssl/ecdsa.h"
#endif
#if defined(POLARSSL_BASE64_C)
#include "polarssl/base64.h"
#if defined(POLARSSL_PEM_C)
#include "polarssl/pem.h"
#endif
#if defined(POLARSSL_MEMORY_C)
@ -276,45 +276,7 @@ int pk_write_key_der( pk_context *key, unsigned char *buf, size_t size )
return( len );
}
#if defined(POLARSSL_BASE64_C)
static int pk_write_pemify( const char *begin_str, const char *end_str,
const unsigned char *der_data, size_t der_len,
unsigned char *buf, size_t size )
{
int ret;
unsigned char base_buf[4096];
unsigned char *c = base_buf, *p = buf;
size_t len = 0, olen = sizeof(base_buf);
if( ( ret = base64_encode( base_buf, &olen, der_data, der_len ) ) != 0 )
return( ret );
if( olen + strlen( begin_str ) + strlen( end_str ) +
olen / 64 > size )
{
return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
}
memcpy( p, begin_str, strlen( begin_str ) );
p += strlen( begin_str );
while( olen )
{
len = ( olen > 64 ) ? 64 : olen;
memcpy( p, c, len );
olen -= len;
p += len;
c += len;
*p++ = '\n';
}
memcpy( p, end_str, strlen( end_str ) );
p += strlen( end_str );
*p = '\0';
return( 0 );
}
#if defined(POLARSSL_PEM_C)
#define PEM_BEGIN_PUBLIC_KEY "-----BEGIN PUBLIC KEY-----\n"
#define PEM_END_PUBLIC_KEY "-----END PUBLIC KEY-----\n"
@ -328,16 +290,17 @@ int pk_write_pubkey_pem( pk_context *key, unsigned char *buf, size_t size )
{
int ret;
unsigned char output_buf[4096];
size_t olen = 0;
if( ( ret = pk_write_pubkey_der( key, output_buf,
sizeof(output_buf) ) ) < 0 )
sizeof(output_buf) ) ) < 0 )
{
return( ret );
}
if( ( ret = pk_write_pemify( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
if( ( ret = pem_write_buffer( PEM_BEGIN_PUBLIC_KEY, PEM_END_PUBLIC_KEY,
output_buf + sizeof(output_buf) - ret,
ret, buf, size ) ) != 0 )
ret, buf, size, &olen ) ) != 0 )
{
return( ret );
}
@ -350,12 +313,10 @@ int pk_write_key_pem( pk_context *key, unsigned char *buf, size_t size )
int ret;
unsigned char output_buf[4096];
char *begin, *end;
size_t olen = 0;
if( ( ret = pk_write_key_der( key, output_buf,
sizeof(output_buf) ) ) < 0 )
{
if( ( ret = pk_write_key_der( key, output_buf, sizeof(output_buf) ) ) < 0 )
return( ret );
}
#if defined(POLARSSL_RSA_C)
if( pk_get_type( key ) == POLARSSL_PK_RSA )
@ -375,15 +336,15 @@ int pk_write_key_pem( pk_context *key, unsigned char *buf, size_t size )
#endif
return( POLARSSL_ERR_PK_FEATURE_UNAVAILABLE );
if( ( ret = pk_write_pemify( begin, end,
if( ( ret = pem_write_buffer( begin, end,
output_buf + sizeof(output_buf) - ret,
ret, buf, size ) ) != 0 )
ret, buf, size, &olen ) ) != 0 )
{
return( ret );
}
return( 0 );
}
#endif /* POLARSSL_BASE64_C */
#endif /* POLARSSL_PEM_C */
#endif /* POLARSSL_PK_WRITE_C */

55
library/x509write.c
View file

@ -42,8 +42,8 @@
#include "polarssl/sha1.h"
#if defined(POLARSSL_BASE64_C)
#include "polarssl/base64.h"
#if defined(POLARSSL_PEM_C)
#include "polarssl/pem.h"
#endif
#if defined(POLARSSL_MEMORY_C)
@ -816,52 +816,14 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size,
#define PEM_BEGIN_CSR "-----BEGIN CERTIFICATE REQUEST-----\n"
#define PEM_END_CSR "-----END CERTIFICATE REQUEST-----\n"
#if defined(POLARSSL_BASE64_C)
static int x509write_pemify( const char *begin_str, const char *end_str,
const unsigned char *der_data, size_t der_len,
unsigned char *buf, size_t size )
{
int ret;
unsigned char base_buf[4096];
unsigned char *c = base_buf, *p = buf;
size_t len = 0, olen = sizeof(base_buf);
if( ( ret = base64_encode( base_buf, &olen, der_data, der_len ) ) != 0 )
return( ret );
if( olen + strlen( begin_str ) + strlen( end_str ) +
olen / 64 > size )
{
return( POLARSSL_ERR_BASE64_BUFFER_TOO_SMALL );
}
memcpy( p, begin_str, strlen( begin_str ) );
p += strlen( begin_str );
while( olen )
{
len = ( olen > 64 ) ? 64 : olen;
memcpy( p, c, len );
olen -= len;
p += len;
c += len;
*p++ = '\n';
}
memcpy( p, end_str, strlen( end_str ) );
p += strlen( end_str );
*p = '\0';
return( 0 );
}
#if defined(POLARSSL_PEM_C)
int x509write_crt_pem( x509write_cert *crt, unsigned char *buf, size_t size,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng )
{
int ret;
unsigned char output_buf[4096];
size_t olen = 0;
if( ( ret = x509write_crt_der( crt, output_buf, sizeof(output_buf),
f_rng, p_rng ) ) < 0 )
@ -869,9 +831,9 @@ int x509write_crt_pem( x509write_cert *crt, unsigned char *buf, size_t size,
return( ret );
}
if( ( ret = x509write_pemify( PEM_BEGIN_CRT, PEM_END_CRT,
if( ( ret = pem_write_buffer( PEM_BEGIN_CRT, PEM_END_CRT,
output_buf + sizeof(output_buf) - ret,
ret, buf, size ) ) != 0 )
ret, buf, size, &olen ) ) != 0 )
{
return( ret );
}
@ -885,6 +847,7 @@ int x509write_csr_pem( x509write_csr *ctx, unsigned char *buf, size_t size,
{
int ret;
unsigned char output_buf[4096];
size_t olen = 0;
if( ( ret = x509write_csr_der( ctx, output_buf, sizeof(output_buf),
f_rng, p_rng ) ) < 0 )
@ -892,9 +855,9 @@ int x509write_csr_pem( x509write_csr *ctx, unsigned char *buf, size_t size,
return( ret );
}
if( ( ret = x509write_pemify( PEM_BEGIN_CSR, PEM_END_CSR,
if( ( ret = pem_write_buffer( PEM_BEGIN_CSR, PEM_END_CSR,
output_buf + sizeof(output_buf) - ret,
ret, buf, size ) ) != 0 )
ret, buf, size, &olen ) ) != 0 )
{
return( ret );
}

57
tests/data_files/server1.crt
View file

@ -1,60 +1,3 @@
Certificate:
Data:
Version: 3 (0x2)
Serial Number: 1 (0x1)
Signature Algorithm: sha1WithRSAEncryption
Issuer: C=NL, O=PolarSSL, CN=PolarSSL Test CA
Validity
Not Before: Feb 12 14:44:06 2011 GMT
Not After : Feb 12 14:44:06 2021 GMT
Subject: C=NL, O=PolarSSL, CN=PolarSSL Server 1
Subject Public Key Info:
Public Key Algorithm: rsaEncryption
RSA Public Key: (2048 bit)
Modulus (2048 bit):
00:a9:02:1f:3d:40:6a:d5:55:53:8b:fd:36:ee:82:
65:2e:15:61:5e:89:bf:b8:e8:45:90:db:ee:88:16:
52:d3:f1:43:50:47:96:12:59:64:87:6b:fd:2b:e0:
46:f9:73:be:dd:cf:92:e1:91:5b:ed:66:a0:6f:89:
29:79:45:80:d0:83:6a:d5:41:43:77:5f:39:7c:09:
04:47:82:b0:57:39:70:ed:a3:ec:15:19:1e:a8:33:
08:47:c1:05:42:a9:fd:4c:c3:b4:df:dd:06:1f:4d:
10:51:40:67:73:13:0f:40:f8:6d:81:25:5f:0a:b1:
53:c6:30:7e:15:39:ac:f9:5a:ee:7f:92:9e:a6:05:
5b:e7:13:97:85:b5:23:92:d9:d4:24:06:d5:09:25:
89:75:07:dd:a6:1a:8f:3f:09:19:be:ad:65:2c:64:
eb:95:9b:dc:fe:41:5e:17:a6:da:6c:5b:69:cc:02:
ba:14:2c:16:24:9c:4a:dc:cd:d0:f7:52:67:73:f1:
2d:a0:23:fd:7e:f4:31:ca:2d:70:ca:89:0b:04:db:
2e:a6:4f:70:6e:9e:ce:bd:58:89:e2:53:59:9e:6e:
5a:92:65:e2:88:3f:0c:94:19:a3:dd:e5:e8:9d:95:
13:ed:29:db:ab:70:12:dc:5a:ca:6b:17:ab:52:82:
54:b1
Exponent: 65537 (0x10001)
X509v3 extensions:
X509v3 Basic Constraints:
CA:FALSE
X509v3 Subject Key Identifier:
1F:74:D6:3F:29:C1:74:74:45:3B:05:12:2C:3D:A8:BD:43:59:02:A6
X509v3 Authority Key Identifier:
keyid:B4:5A:E4:A5:B3:DE:D2:52:F6:B9:D5:A6:95:0F:EB:3E:BC:C7:FD:FF
Signature Algorithm: sha1WithRSAEncryption
bd:cf:96:c1:95:1e:9a:c2:6e:d8:88:88:d8:2a:7a:96:20:3e:
50:0b:c8:c7:df:1d:41:ed:e4:66:cd:b3:02:81:7d:57:04:1b:
5d:c6:33:59:0f:c1:20:b9:23:34:89:8a:6c:f2:fd:c7:48:36:
8c:80:e7:e1:9b:c6:60:5c:b0:33:02:0e:fd:df:be:61:bc:18:
89:0c:38:db:fb:fb:46:23:32:f7:8c:c1:3e:7c:de:1e:2f:3a:
77:2f:f4:8e:93:8e:25:4c:77:21:74:6c:18:b7:72:8d:bf:f5:
4f:5d:64:95:c1:6a:1a:70:11:88:af:bc:55:8a:25:30:f3:fa:
69:f2:af:2d:75:fb:2b:89:22:52:9b:05:42:15:29:13:95:5e:
33:9a:55:d4:c7:22:d8:44:ce:25:ab:b6:70:ee:34:14:9b:c8:
fc:2f:56:ff:04:7e:18:00:2b:31:ac:36:7f:11:bb:ec:4d:e5:
69:a6:b4:2c:03:a5:7b:13:3a:03:82:8e:6f:97:f9:70:64:cc:
e4:88:7a:b4:41:79:15:5a:b7:ff:db:f3:34:86:0c:6b:51:6a:
cd:a7:01:2d:91:7c:cd:21:d8:2c:48:a6:5c:17:73:8c:1a:0d:
e2:a0:d4:fd:6c:d1:c9:84:41:46:30:08:e3:d9:b3:1d:7e:ab:
6a:57:aa:9f
-----BEGIN CERTIFICATE-----
MIIDPzCCAiegAwIBAgIBATANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER
MA8GA1UEChMIUG9sYXJTU0wxGTAXBgNVBAMTEFBvbGFyU1NMIFRlc3QgQ0EwHhcN

41
tests/suites/test_suite_x509write.function
View file

@ -15,13 +15,11 @@ void x509_csr_check( char *key_file, int md_type,
char *cert_req_check_file )
{
pk_context key;
pem_context pem;
x509write_csr req;
unsigned char *c;
unsigned char buf[4000];
unsigned char check_buf[4000];
int ret;
size_t olen = sizeof( check_buf );
size_t olen = 0, pem_len = 0;
FILE *f;
char *subject_name = "C=NL,O=PolarSSL,CN=PolarSSL Server 1";
rnd_pseudo_info rnd_info;
@ -36,25 +34,21 @@ void x509_csr_check( char *key_file, int md_type,
x509write_csr_set_key( &req, &key );
TEST_ASSERT( x509write_csr_set_subject_name( &req, subject_name ) == 0 );
ret = x509write_csr_der( &req, buf, sizeof( buf ),
ret = x509write_csr_pem( &req, buf, sizeof(buf),
rnd_pseudo_rand, &rnd_info );
TEST_ASSERT( ret >= 0 );
TEST_ASSERT( ret == 0 );
c = buf + sizeof( buf ) - ret;
pem_len = strlen( (char *) buf );
f = fopen( cert_req_check_file, "r" );
TEST_ASSERT( f != NULL );
fread( check_buf, 1, sizeof( check_buf ), f );
olen = fread( check_buf, 1, sizeof( check_buf ), f );
fclose( f );
pem_init( &pem );
pem_read_buffer( &pem, "-----BEGIN CERTIFICATE REQUEST-----", "-----END CERTIFICATE REQUEST-----", check_buf, NULL, 0, &olen );
TEST_ASSERT( pem.buflen == (size_t) ret );
TEST_ASSERT( memcmp( c, pem.buf, pem.buflen ) == 0 );
TEST_ASSERT( olen >= pem_len - 1 );
TEST_ASSERT( memcmp( buf, check_buf, pem_len - 1 ) == 0 );
x509write_csr_free( &req );
pem_free( &pem );
pk_free( &key );
}
/* END_CASE */
@ -67,14 +61,12 @@ void x509_crt_check( char *subject_key_file, char *subject_pwd,
int md_type, char *cert_check_file )
{
pk_context subject_key, issuer_key;
pem_context pem;
x509write_cert crt;
unsigned char *c;
unsigned char buf[4000];
unsigned char check_buf[5000];
mpi serial;
int ret;
size_t olen = sizeof( check_buf );
size_t olen = 0, pem_len = 0;
FILE *f;
rnd_pseudo_info rnd_info;
@ -103,27 +95,24 @@ void x509_crt_check( char *subject_key_file, char *subject_pwd,
TEST_ASSERT( x509write_crt_set_subject_key_identifier( &crt ) == 0 );
TEST_ASSERT( x509write_crt_set_authority_key_identifier( &crt ) == 0 );
ret = x509write_crt_der( &crt, buf, sizeof(buf),
ret = x509write_crt_pem( &crt, buf, sizeof(buf),
rnd_pseudo_rand, &rnd_info );
TEST_ASSERT( ret >= 0 );
TEST_ASSERT( ret == 0 );
c = buf + sizeof( buf ) - ret;
pem_len = strlen( (char *) buf );
f = fopen( cert_check_file, "r" );
TEST_ASSERT( f != NULL );
TEST_ASSERT( fread( check_buf, 1, sizeof(check_buf), f ) < sizeof(check_buf) );
TEST_ASSERT( ( olen = fread( check_buf, 1, sizeof(check_buf), f ) ) <
sizeof(check_buf) );
fclose( f );
pem_init( &pem );
TEST_ASSERT( pem_read_buffer( &pem, "-----BEGIN CERTIFICATE-----", "-----END CERTIFICATE-----", check_buf, NULL, 0, &olen ) >= 0 );
TEST_ASSERT( pem.buflen == (size_t) ret );
TEST_ASSERT( memcmp( c, pem.buf, pem.buflen ) == 0 );
TEST_ASSERT( olen >= pem_len - 1 );
TEST_ASSERT( memcmp( buf, check_buf, pem_len - 1 ) == 0 );
x509write_crt_free( &crt );
pk_free( &issuer_key );
pk_free( &subject_key );
pem_free( &pem );
mpi_free( &serial );
}
/* END_CASE */