From c22987ce97c9ab8e5abb83388771208ac716cf22 Mon Sep 17 00:00:00 2001 From: agnosticdev Date: Mon, 16 Sep 2019 07:09:01 -0500 Subject: [PATCH] Update dgst.c to show a list of message digests Fixes #9893 Reviewed-by: Paul Dale Reviewed-by: Matthias St. Pierre (Merged from https://github.com/openssl/openssl/pull/10219) --- apps/dgst.c | 46 +++++++++++++++++++++++++++++++++++++++++++++- apps/enc.c | 3 ++- doc/man1/dgst.pod | 5 +++++ doc/man1/enc.pod | 9 ++++++++- 4 files changed, 60 insertions(+), 3 deletions(-) diff --git a/apps/dgst.c b/apps/dgst.c index 9223133eb2..82b8d02cee 100644 --- a/apps/dgst.c +++ b/apps/dgst.c @@ -19,6 +19,7 @@ #include #include #include +#include #undef BUFSIZE #define BUFSIZE 1024*8 @@ -27,9 +28,15 @@ int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout, EVP_PKEY *key, unsigned char *sigin, int siglen, const char *sig_name, const char *md_name, const char *file); +static void show_digests(const OBJ_NAME *name, void *bio_); + +struct doall_dgst_digests { + BIO *bio; + int n; +}; typedef enum OPTION_choice { - OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, + OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_LIST, OPT_C, OPT_R, OPT_OUT, OPT_SIGN, OPT_PASSIN, OPT_VERIFY, OPT_PRVERIFY, OPT_SIGNATURE, OPT_KEYFORM, OPT_ENGINE, OPT_ENGINE_IMPL, OPT_HEX, OPT_BINARY, OPT_DEBUG, OPT_FIPS_FINGERPRINT, @@ -43,6 +50,7 @@ const OPTIONS dgst_options[] = { {OPT_HELP_STR, 1, '-', " file... files to digest (default is stdin)\n"}, {"help", OPT_HELP, '-', "Display this summary"}, + {"list", OPT_LIST, '-', "List digests"}, {"c", OPT_C, '-', "Print the digest with separating colons"}, {"r", OPT_R, '-', "Print the digest in coreutils format"}, {"out", OPT_OUT, '>', "Output to filename rather than stdout"}, @@ -91,6 +99,7 @@ int dgst_main(int argc, char **argv) int i, ret = 1, out_bin = -1, want_pub = 0, do_verify = 0; unsigned char *buf = NULL, *sigbuf = NULL; int engine_impl = 0; + struct doall_dgst_digests dec; prog = opt_progname(argv[0]); buf = app_malloc(BUFSIZE, "I/O buffer"); @@ -108,6 +117,15 @@ int dgst_main(int argc, char **argv) opt_help(dgst_options); ret = 0; goto end; + case OPT_LIST: + BIO_printf(bio_out, "Supported digests:\n"); + dec.bio = bio_out; + dec.n = 0; + OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_MD_METH, + show_digests, &dec); + BIO_printf(bio_out, "\n"); + ret = 0; + goto end; case OPT_C: separator = 1; break; @@ -413,6 +431,32 @@ int dgst_main(int argc, char **argv) return ret; } +static void show_digests(const OBJ_NAME *name, void *arg) +{ + struct doall_dgst_digests *dec = (struct doall_dgst_digests *)arg; + const EVP_MD *md = NULL; + + /* Filter out signed digests (a.k.a signature algorithms) */ + if (strstr(name->name, "rsa") != NULL || strstr(name->name, "RSA") != NULL) + return; + + if (!islower((unsigned char)*name->name)) + return; + + /* Filter out message digests that we cannot use */ + md = EVP_get_digestbyname(name->name); + if (md == NULL) + return; + + BIO_printf(dec->bio, "-%-25s", name->name); + if (++dec->n == 3) { + BIO_printf(dec->bio, "\n"); + dec->n = 0; + } else { + BIO_printf(dec->bio, " "); + } +} + /* * The newline_escape_filename function performs newline escaping for any * filename that contains a newline. This function also takes a pointer diff --git a/apps/enc.c b/apps/enc.c index d1772f3eb9..ddf51e0dba 100644 --- a/apps/enc.c +++ b/apps/enc.c @@ -50,7 +50,8 @@ typedef enum OPTION_choice { const OPTIONS enc_options[] = { {"help", OPT_HELP, '-', "Display this summary"}, - {"ciphers", OPT_LIST, '-', "List ciphers"}, + {"list", OPT_LIST, '-', "List ciphers"}, + {"ciphers", OPT_LIST, '-', "Alias for -list"}, {"in", OPT_IN, '<', "Input file"}, {"out", OPT_OUT, '>', "Output file"}, {"pass", OPT_PASS, 's', "Passphrase source"}, diff --git a/doc/man1/dgst.pod b/doc/man1/dgst.pod index 6d48523c99..ea2c4e3e15 100644 --- a/doc/man1/dgst.pod +++ b/doc/man1/dgst.pod @@ -12,6 +12,7 @@ B [B<-help>] [B<-c>] [B<-d>] +[B<-list>] [B<-hex>] [B<-binary>] [B<-r>] @@ -67,6 +68,10 @@ B format output is used. Print out BIO debugging information. +=item B<-list> + +Prints out a list of supported message digests. + =item B<-hex> Digest is to be output as a hex dump. This is the default case for a "normal" diff --git a/doc/man1/enc.pod b/doc/man1/enc.pod index a3e0b03b20..6f20ac1fc7 100644 --- a/doc/man1/enc.pod +++ b/doc/man1/enc.pod @@ -9,6 +9,7 @@ enc - symmetric cipher routines B> [B<-help>] +[B<-list>] [B<-ciphers>] [B<-in filename>] [B<-out filename>] @@ -56,10 +57,14 @@ either by itself or in addition to the encryption or decryption. Print out a usage message. -=item B<-ciphers> +=item B<-list> List all supported ciphers. +=item B<-ciphers> + +Alias of -list to display all supported ciphers. + =item B<-in filename> The input filename, standard input by default. @@ -419,6 +424,8 @@ certain parameters. So if, for example, you want to use RC2 with a The default digest was changed from MD5 to SHA256 in OpenSSL 1.1.0. +The B<-list> option was added in OpenSSL 1.1.1e. + =head1 COPYRIGHT Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. -- 2.25.1