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Change required by RSA-4096 support

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This commit is contained in:
NIIBE Yutaka
2014-12-12 14:02:47 +09:00
parent fd8543f092
commit 8d56a4bff5
4 changed files with 18 additions and 7 deletions
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3
polarssl/library/bignum.c
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@@ -1545,7 +1545,8 @@ int mpi_exp_mod( mpi *X, const mpi *A, const mpi *E, const mpi *N, mpi *_RR )
{
int ret;
size_t i = mpi_msb( E );
size_t wsize = ( i > 671 ) ? 6 : ( i > 239 ) ? 5 :
size_t wsize = ( i > 1024 ) ? 4 : /* Because of not enough memory. */
( i > 671 ) ? 6 : ( i > 239 ) ? 5 :
( i > 79 ) ? 4 : ( i > 23 ) ? 3 : 1;
size_t wbits, one = 1;
size_t nblimbs;

4
polarssl/library/rsa.c
View File

@@ -671,14 +671,14 @@ int rsa_rsaes_pkcs1_v15_decrypt( rsa_context *ctx,
size_t ilen, pad_count = 0;
unsigned char *p, *q;
unsigned char bt;
unsigned char buf[POLARSSL_MPI_MAX_SIZE];
unsigned char buf[ctx->len];
if( ctx->padding != RSA_PKCS_V15 )
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
ilen = ctx->len;
if( ilen < 16 || ilen > sizeof( buf ) )
if( ilen < 16)
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
ret = ( mode == RSA_PUBLIC )