int main( int argc, char *argv[] ) { FILE *f; int ret; size_t i; rsa_context rsa; unsigned char hash[20]; unsigned char buf[512]; char filename[512]; ret = 1; if( argc != 3 ) { printf( "usage: rsa_verify_pss <key_file> <filename>\n" ); #ifdef WIN32 printf( "\n" ); #endif goto exit; } printf( "\n . Reading public key from '%s'", argv[1] ); fflush( stdout ); rsa_init( &rsa, RSA_PKCS_V21, POLARSSL_MD_SHA1 ); if( ( ret = x509parse_public_keyfile( &rsa, argv[1] ) ) != 0 ) { printf( " failed\n ! x509parse_public_key returned %d\n\n", ret ); goto exit; } /* * Extract the RSA signature from the text file */ ret = 1; snprintf( filename, 512, "%s.sig", argv[2] ); if( ( f = fopen( filename, "rb" ) ) == NULL ) { printf( "\n ! Could not open %s\n\n", filename ); goto exit; } i = fread( buf, 1, rsa.len, f ); fclose( f ); if( i != rsa.len ) { printf( "\n ! Invalid RSA signature format\n\n" ); goto exit; } /* * Compute the SHA-1 hash of the input file and compare * it with the hash decrypted from the RSA signature. */ printf( "\n . Verifying the RSA/SHA-1 signature" ); fflush( stdout ); if( ( ret = sha1_file( argv[2], hash ) ) != 0 ) { printf( " failed\n ! Could not open or read %s\n\n", argv[2] ); goto exit; } if( ( ret = rsa_pkcs1_verify( &rsa, RSA_PUBLIC, SIG_RSA_SHA1, 20, hash, buf ) ) != 0 ) { printf( " failed\n ! rsa_pkcs1_verify returned %d\n\n", ret ); goto exit; } printf( "\n . OK (the decrypted SHA-1 hash matches)\n\n" ); ret = 0; exit: #ifdef WIN32 printf( " + Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif return( ret ); }
int main( int argc, char *argv[] ) { int ret = 0; rsa_context rsa; char buf[1024]; int i, j, n; char *p, *q; /* * Set to sane values */ memset( &rsa, 0, sizeof( rsa_context ) ); memset( buf, 0, 1024 ); if( argc == 0 ) { usage: printf( USAGE ); goto exit; } opt.mode = DFL_MODE; opt.filename = DFL_FILENAME; opt.debug_level = DFL_DEBUG_LEVEL; for( i = 1; i < argc; i++ ) { n = strlen( argv[i] ); for( j = 0; j < n; j++ ) { if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' ) argv[i][j] |= 0x20; } p = argv[i]; if( ( q = strchr( p, '=' ) ) == NULL ) goto usage; *q++ = '\0'; if( strcmp( p, "mode" ) == 0 ) { if( strcmp( q, "private" ) == 0 ) opt.mode = MODE_PRIVATE; else if( strcmp( q, "public" ) == 0 ) opt.mode = MODE_PUBLIC; else goto usage; } else if( strcmp( p, "filename" ) == 0 ) opt.filename = q; else if( strcmp( p, "debug_level" ) == 0 ) { opt.debug_level = atoi( q ); if( opt.debug_level < 0 || opt.debug_level > 65535 ) goto usage; } else goto usage; } if( opt.mode == MODE_PRIVATE ) { /* * 1.1. Load the key */ printf( "\n . Loading the private key ..." ); fflush( stdout ); ret = x509parse_keyfile( &rsa, opt.filename, NULL ); if( ret != 0 ) { #ifdef POLARSSL_ERROR_C error_strerror( ret, buf, 1024 ); #endif printf( " failed\n ! x509parse_key returned %d - %s\n\n", ret, buf ); rsa_free( &rsa ); goto exit; } printf( " ok\n" ); /* * 1.2 Print the key */ printf( " . Key information ...\n" ); mpi_write_file( "N: ", &rsa.N, 16, NULL ); mpi_write_file( "E: ", &rsa.E, 16, NULL ); mpi_write_file( "D: ", &rsa.D, 16, NULL ); mpi_write_file( "P: ", &rsa.P, 16, NULL ); mpi_write_file( "Q: ", &rsa.Q, 16, NULL ); mpi_write_file( "DP: ", &rsa.DP, 16, NULL ); mpi_write_file( "DQ: ", &rsa.DQ, 16, NULL ); mpi_write_file( "QP: ", &rsa.QP, 16, NULL ); } else if( opt.mode == MODE_PUBLIC ) { /* * 1.1. Load the key */ printf( "\n . Loading the public key ..." ); fflush( stdout ); ret = x509parse_public_keyfile( &rsa, opt.filename ); if( ret != 0 ) { #ifdef POLARSSL_ERROR_C error_strerror( ret, buf, 1024 ); #endif printf( " failed\n ! x509parse_public_key returned %d - %s\n\n", ret, buf ); rsa_free( &rsa ); goto exit; } printf( " ok\n" ); /* * 1.2 Print the key */ printf( " . Key information ...\n" ); mpi_write_file( "N: ", &rsa.N, 16, NULL ); mpi_write_file( "E: ", &rsa.E, 16, NULL ); } else goto usage; exit: rsa_free( &rsa ); #ifdef WIN32 printf( " + Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif return( ret ); }
int main( int argc, char *argv[] ) { int ret = 0; rsa_context rsa; char buf[1024]; int i; char *p, *q; /* * Set to sane values */ memset( &rsa, 0, sizeof( rsa_context ) ); memset( buf, 0, 1024 ); if( argc == 0 ) { usage: printf( USAGE ); goto exit; } opt.mode = DFL_MODE; opt.filename = DFL_FILENAME; opt.password = DFL_PASSWORD; opt.password_file = DFL_PASSWORD_FILE; opt.debug_level = DFL_DEBUG_LEVEL; for( i = 1; i < argc; i++ ) { p = argv[i]; if( ( q = strchr( p, '=' ) ) == NULL ) goto usage; *q++ = '\0'; if( strcmp( p, "mode" ) == 0 ) { if( strcmp( q, "private" ) == 0 ) opt.mode = MODE_PRIVATE; else if( strcmp( q, "public" ) == 0 ) opt.mode = MODE_PUBLIC; else goto usage; } else if( strcmp( p, "filename" ) == 0 ) opt.filename = q; else if( strcmp( p, "password" ) == 0 ) opt.password = q; else if( strcmp( p, "password_file" ) == 0 ) opt.password_file = q; else if( strcmp( p, "debug_level" ) == 0 ) { opt.debug_level = atoi( q ); if( opt.debug_level < 0 || opt.debug_level > 65535 ) goto usage; } else goto usage; } if( opt.mode == MODE_PRIVATE ) { if( strlen( opt.password ) && strlen( opt.password_file ) ) { printf( "Error: cannot have both password and password_file\n" ); goto usage; } if( strlen( opt.password_file ) ) { FILE *f; printf( "\n . Loading the password file ..." ); if( ( f = fopen( opt.password_file, "rb" ) ) == NULL ) { printf( " failed\n ! fopen returned NULL\n" ); goto exit; } fgets( buf, 1024, f ); fclose( f ); i = strlen( buf ); if( buf[i - 1] == '\n' ) buf[i - 1] = '\0'; if( buf[i - 2] == '\r' ) buf[i - 2] = '\0'; opt.password = buf; } /* * 1.1. Load the key */ printf( "\n . Loading the private key ..." ); fflush( stdout ); ret = x509parse_keyfile( &rsa, opt.filename, opt.password ); if( ret != 0 ) { #ifdef POLARSSL_ERROR_C error_strerror( ret, buf, 1024 ); #endif printf( " failed\n ! x509parse_key returned %d - %s\n\n", ret, buf ); rsa_free( &rsa ); goto exit; } printf( " ok\n" ); /* * 1.2 Print the key */ printf( " . Key information ...\n" ); mpi_write_file( "N: ", &rsa.N, 16, NULL ); mpi_write_file( "E: ", &rsa.E, 16, NULL ); mpi_write_file( "D: ", &rsa.D, 16, NULL ); mpi_write_file( "P: ", &rsa.P, 16, NULL ); mpi_write_file( "Q: ", &rsa.Q, 16, NULL ); mpi_write_file( "DP: ", &rsa.DP, 16, NULL ); mpi_write_file( "DQ: ", &rsa.DQ, 16, NULL ); mpi_write_file( "QP: ", &rsa.QP, 16, NULL ); } else if( opt.mode == MODE_PUBLIC ) { /* * 1.1. Load the key */ printf( "\n . Loading the public key ..." ); fflush( stdout ); ret = x509parse_public_keyfile( &rsa, opt.filename ); if( ret != 0 ) { #ifdef POLARSSL_ERROR_C error_strerror( ret, buf, 1024 ); #endif printf( " failed\n ! x509parse_public_key returned %d - %s\n\n", ret, buf ); rsa_free( &rsa ); goto exit; } printf( " ok\n" ); /* * 1.2 Print the key */ printf( " . Key information ...\n" ); mpi_write_file( "N: ", &rsa.N, 16, NULL ); mpi_write_file( "E: ", &rsa.E, 16, NULL ); } else goto usage; exit: rsa_free( &rsa ); #if defined(_WIN32) printf( " + Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif return( ret ); }