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Check that length is properly set in mbedtls_rsa_check_pubkey

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Hanno Becker 2017-09-29 11:48:23 +01:00
parent 2f8f06aa25
commit ba1ba11a98
1 changed files with 3 additions and 0 deletions
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3
library/rsa.c
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@ -1028,6 +1028,9 @@ int mbedtls_rsa_check_pubkey( const mbedtls_rsa_context *ctx )
if( !ctx->N.p || !ctx->E.p )
return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
if( ctx->len != mbedtls_mpi_size( &ctx->N ) )
return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );
if( ( ctx->N.p[0] & 1 ) == 0 ||
( ctx->E.p[0] & 1 ) == 0 )
return( MBEDTLS_ERR_RSA_KEY_CHECK_FAILED );