diff options
author | Tomas Mraz <tomas@openssl.org> | 2021-08-11 13:09:09 +0200 |
---|---|---|
committer | Tomas Mraz <tomas@openssl.org> | 2021-08-24 17:56:46 +0200 |
commit | 94736c3a10ae7d109243abffb0200931fb3db5a8 (patch) | |
tree | 1f1ac6de4dc7792d2b7dc65401e6a71abed3a0f8 /apps/rsa.c | |
parent | 796f4f7085ac95a1b0ccee8ff3c6c183219cdab2 (diff) |
rsa: Try legacy encoding functions for pubkey
If there are no suitable encoders it might mean the key is in
an engine and thus it is a legacy key. Try legacy encoding
routines to encode the public key. We do not attempt encoding
a private key as it would be in most cases impossible anyway.
Fixes #16256
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16289)
Diffstat (limited to 'apps/rsa.c')
-rw-r--r-- | apps/rsa.c | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/apps/rsa.c b/apps/rsa.c index 3e9d320ea3..05a091ce4b 100644 --- a/apps/rsa.c +++ b/apps/rsa.c @@ -7,6 +7,9 @@ * https://www.openssl.org/source/license.html */ +/* Necessary for legacy RSA public key export */ +#define OPENSSL_SUPPRESS_DEPRECATED + #include <openssl/opensslconf.h> #include <stdio.h> @@ -86,6 +89,36 @@ const OPTIONS rsa_options[] = { {NULL} }; +static int try_legacy_encoding(EVP_PKEY *pkey, int outformat, int pubout, + BIO *out) +{ + int ret = 0; +#ifndef OPENSSL_NO_DEPRECATED_3_0 + const RSA *rsa = EVP_PKEY_get0_RSA(pkey); + + if (rsa == NULL) + return 0; + + if (outformat == FORMAT_ASN1) { + if (pubout == 2) + ret = i2d_RSAPublicKey_bio(out, rsa) > 0; + else + ret = i2d_RSA_PUBKEY_bio(out, rsa) > 0; + } else if (outformat == FORMAT_PEM) { + if (pubout == 2) + ret = PEM_write_bio_RSAPublicKey(out, rsa) > 0; + else + ret = PEM_write_bio_RSA_PUBKEY(out, rsa) > 0; +# ifndef OPENSSL_NO_DSA + } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { + ret = i2b_PublicKey_bio(out, pkey) > 0; +# endif + } +#endif + + return ret; +} + int rsa_main(int argc, char **argv) { ENGINE *e = NULL; @@ -331,7 +364,11 @@ int rsa_main(int argc, char **argv) output_type, output_structure, NULL); if (OSSL_ENCODER_CTX_get_num_encoders(ectx) == 0) { - BIO_printf(bio_err, "%s format not supported\n", output_type); + if ((!pubout && !pubin) + || !try_legacy_encoding(pkey, outformat, pubout, out)) + BIO_printf(bio_err, "%s format not supported\n", output_type); + else + ret = 0; goto end; } |