From ccef18c2ff28541877366c63eee6e41d7f28016b Mon Sep 17 00:00:00 2001 From: Hanno Becker Date: Wed, 23 Aug 2017 06:46:45 +0100 Subject: [PATCH] Adapt rsa_decrypt example program to new RSA interface --- programs/pkey/rsa_decrypt.c | 50 ++++++++++++++++++++++++++++--------- 1 file changed, 38 insertions(+), 12 deletions(-) diff --git a/programs/pkey/rsa_decrypt.c b/programs/pkey/rsa_decrypt.c index b64e1564a5..493c8706ef 100644 --- a/programs/pkey/rsa_decrypt.c +++ b/programs/pkey/rsa_decrypt.c @@ -64,6 +64,7 @@ int main( int argc, char *argv[] ) int return_val, exit_val, c; size_t i; mbedtls_rsa_context rsa; + mbedtls_mpi N, P, Q, D, E, DP, DQ, QP; mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; unsigned char result[1024]; @@ -91,6 +92,9 @@ int main( int argc, char *argv[] ) mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 ); mbedtls_ctr_drbg_init( &ctr_drbg ); mbedtls_entropy_init( &entropy ); + mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q ); + mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP ); + mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP ); return_val = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, @@ -114,14 +118,14 @@ int main( int argc, char *argv[] ) goto exit; } - if( ( return_val = mbedtls_mpi_read_file( &rsa.N , 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.E , 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.D , 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.P , 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.Q , 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.DP, 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.DQ, 16, f ) ) != 0 || - ( return_val = mbedtls_mpi_read_file( &rsa.QP, 16, f ) ) != 0 ) + if( ( return_val = mbedtls_mpi_read_file( &N , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &E , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &D , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &P , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &Q , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &DP , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &DQ , 16, f ) ) != 0 || + ( return_val = mbedtls_mpi_read_file( &QP , 16, f ) ) != 0 ) { exit_val = MBEDTLS_EXIT_FAILURE; mbedtls_printf( " failed\n ! mbedtls_mpi_read_file returned %d\n\n", @@ -129,11 +133,31 @@ int main( int argc, char *argv[] ) fclose( f ); goto exit; } - - rsa.len = ( mbedtls_mpi_bitlen( &rsa.N ) + 7 ) >> 3; - fclose( f ); + if( ( return_val = mbedtls_rsa_import( &rsa, &N, &P, &Q, &D, &E ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_import returned %d\n\n", + return_val ); + goto exit; + } + + if( ( return_val = mbedtls_rsa_complete( &rsa, mbedtls_ctr_drbg_random, + &ctr_drbg ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_complete returned %d\n\n", + return_val ); + goto exit; + } + + /* Although we're not using them, verify CRT parameters */ + if( ( return_val = mbedtls_rsa_check_crt( &rsa, &DP, &DQ, &QP ) ) != 0 ) + { + mbedtls_printf( " failed\n ! mbedtls_rsa_check_crt returned %d\n\n", + return_val ); + goto exit; + } + /* * Extract the RSA encrypted value from the text file */ @@ -184,6 +208,9 @@ exit: mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); mbedtls_rsa_free( &rsa ); + mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q ); + mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP ); + mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP ); #if defined(_WIN32) mbedtls_printf( " + Press Enter to exit this program.\n" ); @@ -193,4 +220,3 @@ exit: return( exit_val ); } #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_RSA_C && MBEDTLS_FS_IO */ -