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Add rsa_check_pub_priv()

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This commit is contained in:
Manuel Pégourié-Gonnard
2014-11-06 14:02:51 +01:00
parent e10e06d863
commit 2f8d1f9fc3
4 changed files with 114 additions and 0 deletions
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20
library/rsa.c
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@ -240,6 +240,26 @@ cleanup:
return( 0 );
}
/*
* Check if contexts holding a public and private key match
*/
int rsa_check_pub_priv( const rsa_context *pub, const rsa_context *prv )
{
if( rsa_check_pubkey( pub ) != 0 ||
rsa_check_privkey( prv ) != 0 )
{
return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
}
if( mpi_cmp_mpi( &pub->N, &prv->N ) != 0 ||
mpi_cmp_mpi( &pub->E, &prv->E ) != 0 )
{
return( POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
}
return( 0 );
}
/*
* Do an RSA public key operation
*/