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Memory leak when using RSA_PKCS_V21 operations fixed

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Paul Bakker 2013-01-03 10:50:31 +01:00
parent 34558735d2
commit 40628bad98
2 changed files with 11 additions and 4 deletions
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4
ChangeLog
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@ -1,5 +1,9 @@
PolarSSL ChangeLog PolarSSL ChangeLog
= Version Master
Bugfix
* Memory leak when using RSA_PKCS_V21 operations fixed
= Version 1.2.3 released 2012-11-26 = Version 1.2.3 released 2012-11-26
Bugfix Bugfix
* Server not always sending correct CertificateRequest message * Server not always sending correct CertificateRequest message

11
library/rsa.c
View file

@ -440,7 +440,6 @@ int rsa_pkcs1_encrypt( rsa_context *ctx,
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
memset( output, 0, olen ); memset( output, 0, olen );
memset( &md_ctx, 0, sizeof( md_context_t ) );
md_init_ctx( &md_ctx, md_info ); md_init_ctx( &md_ctx, md_info );
@ -470,6 +469,8 @@ int rsa_pkcs1_encrypt( rsa_context *ctx,
// //
mgf_mask( output + 1, hlen, output + hlen + 1, olen - hlen - 1, mgf_mask( output + 1, hlen, output + hlen + 1, olen - hlen - 1,
&md_ctx ); &md_ctx );
md_free_ctx( &md_ctx );
break; break;
#endif #endif
@ -566,7 +567,6 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
hlen = md_get_size( md_info ); hlen = md_get_size( md_info );
memset( &md_ctx, 0, sizeof( md_context_t ) );
md_init_ctx( &md_ctx, md_info ); md_init_ctx( &md_ctx, md_info );
@ -585,6 +585,7 @@ int rsa_pkcs1_decrypt( rsa_context *ctx,
&md_ctx ); &md_ctx );
p += hlen; p += hlen;
md_free_ctx( &md_ctx );
// Check validity // Check validity
// //
@ -798,7 +799,6 @@ int rsa_pkcs1_sign( rsa_context *ctx,
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
memset( sig, 0, olen ); memset( sig, 0, olen );
memset( &md_ctx, 0, sizeof( md_context_t ) );
md_init_ctx( &md_ctx, md_info ); md_init_ctx( &md_ctx, md_info );
@ -834,6 +834,8 @@ int rsa_pkcs1_sign( rsa_context *ctx,
// //
mgf_mask( sig + offset, olen - hlen - 1 - offset, p, hlen, &md_ctx ); mgf_mask( sig + offset, olen - hlen - 1 - offset, p, hlen, &md_ctx );
md_free_ctx( &md_ctx );
msb = mpi_msb( &ctx->N ) - 1; msb = mpi_msb( &ctx->N ) - 1;
sig[0] &= 0xFF >> ( olen * 8 - msb ); sig[0] &= 0xFF >> ( olen * 8 - msb );
@ -1012,7 +1014,6 @@ int rsa_pkcs1_verify( rsa_context *ctx,
hlen = md_get_size( md_info ); hlen = md_get_size( md_info );
slen = siglen - hlen - 1; slen = siglen - hlen - 1;
memset( &md_ctx, 0, sizeof( md_context_t ) );
memset( zeros, 0, 8 ); memset( zeros, 0, 8 );
md_init_ctx( &md_ctx, md_info ); md_init_ctx( &md_ctx, md_info );
@ -1054,6 +1055,8 @@ int rsa_pkcs1_verify( rsa_context *ctx,
md_update( &md_ctx, p, slen ); md_update( &md_ctx, p, slen );
md_finish( &md_ctx, result ); md_finish( &md_ctx, result );
md_free_ctx( &md_ctx );
if( memcmp( p + slen, result, hlen ) == 0 ) if( memcmp( p + slen, result, hlen ) == 0 )
return( 0 ); return( 0 );
else else