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authorrhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-05-20 15:05:25 +0000
committerrhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2016-05-20 15:05:25 +0000
commitf52ab6e4940f9095c4fc5e2f7860bd56747f1c7c (patch)
tree49c9339ea609dadfc6bc96012cb4f362d3c6869f /ext/openssl/ossl_pkey_dsa.c
parent02cafdf4916480c2a5b015553cf5b02d6120aed4 (diff)
openssl: improve handling of password for encrypted PEM
* ext/openssl/ossl.c (ossl_pem_passwd_value): Added. Convert the argument to String with StringValue() and validate the length is in 4..PEM_BUFSIZE. PEM_BUFSIZE is a macro defined in OpenSSL headers. (ossl_pem_passwd_cb): When reading/writing encrypted PEM format, we used to pass the password to PEM_def_callback() directly but it was problematic. It is not NUL character safe. And surprisingly, it silently truncates the password to 1024 bytes. [GH ruby/openssl#51] * ext/openssl/ossl.h: Add function prototype declaration of newly added ossl_pem_passwd_value(). * ext/openssl/ossl_pkey.c (ossl_pkey_new_from_data): Use ossl_pem_passwd_value() to validate the password String. * ext/openssl/ossl_pkey_dsa.c (ossl_dsa_initialize, ossl_dsa_export): ditto. * ext/openssl/ossl_pkey_ec.c (ossl_ec_key_initialize, ossl_ec_key_to_string): ditto. * ext/openssl/ossl_pkey_rsa.c (ossl_rsa_initialize, ossl_rsa_export): ditto. * test/openssl/test_pkey_{dsa,ec,rsa}.rb: test this. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55087 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext/openssl/ossl_pkey_dsa.c')
-rw-r--r--ext/openssl/ossl_pkey_dsa.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/ext/openssl/ossl_pkey_dsa.c b/ext/openssl/ossl_pkey_dsa.c
index 4c0c3f1..281d3a0 100644
--- a/ext/openssl/ossl_pkey_dsa.c
+++ b/ext/openssl/ossl_pkey_dsa.c
@@ -216,7 +216,6 @@ ossl_dsa_initialize(int argc, VALUE *argv, VALUE self)
EVP_PKEY *pkey;
DSA *dsa;
BIO *in;
- char *passwd = NULL;
VALUE arg, pass;
GetPKey(self, pkey);
@@ -229,10 +228,10 @@ ossl_dsa_initialize(int argc, VALUE *argv, VALUE self)
}
}
else {
- if (!NIL_P(pass)) passwd = StringValuePtr(pass);
+ pass = ossl_pem_passwd_value(pass);
arg = ossl_to_der_if_possible(arg);
in = ossl_obj2bio(arg);
- dsa = PEM_read_bio_DSAPrivateKey(in, NULL, ossl_pem_passwd_cb, passwd);
+ dsa = PEM_read_bio_DSAPrivateKey(in, NULL, ossl_pem_passwd_cb, (void *)pass);
if (!dsa) {
OSSL_BIO_reset(in);
dsa = PEM_read_bio_DSA_PUBKEY(in, NULL, NULL, NULL);
@@ -320,26 +319,20 @@ ossl_dsa_export(int argc, VALUE *argv, VALUE self)
EVP_PKEY *pkey;
BIO *out;
const EVP_CIPHER *ciph = NULL;
- char *passwd = NULL;
VALUE cipher, pass, str;
GetPKeyDSA(self, pkey);
rb_scan_args(argc, argv, "02", &cipher, &pass);
if (!NIL_P(cipher)) {
ciph = GetCipherPtr(cipher);
- if (!NIL_P(pass)) {
- StringValue(pass);
- if (RSTRING_LENINT(pass) < OSSL_MIN_PWD_LEN)
- ossl_raise(eOSSLError, "OpenSSL requires passwords to be at least four characters long");
- passwd = RSTRING_PTR(pass);
- }
+ pass = ossl_pem_passwd_value(pass);
}
if (!(out = BIO_new(BIO_s_mem()))) {
ossl_raise(eDSAError, NULL);
}
if (DSA_HAS_PRIVATE(pkey->pkey.dsa)) {
if (!PEM_write_bio_DSAPrivateKey(out, pkey->pkey.dsa, ciph,
- NULL, 0, ossl_pem_passwd_cb, passwd)){
+ NULL, 0, ossl_pem_passwd_cb, (void *)pass)){
BIO_free(out);
ossl_raise(eDSAError, NULL);
}