Hi All,
We have been trying to integrate FOM 2.0.13 with OpenSSL 1.0.2u for FIPS compliance. Post integration, we have been able to run in FIPS mode, with all self-tests passing as well. However, we seem to be encountering issues in creation and parsing of ECDSA keys.
A little background on how we build the shared libcrypto library:
TARGET: x86_64
BUILD HOST: x86_64
We do not use the OpenSSL Makefile to build the OpenSSL source. Our build infrastructure creates multiple static archives from the OpenSSL crypto source and finally creates a libcrypto.a from these archives as required by fipsld. The fipscanister.o and libcrypto.a are archived to create the final libcrypto.a and passed onto fipsld for creation of a dynamic library, libcrypto.so. fips_premain_dso gets built as a part of the build process too for generation of signature. These steps mimic the OpenSSL opensource Makefile.
fipsld embeds the signature into the final libcrypto.so successfully and we are able to get into FIPS mode successfully at run time. Self-tests pass as well.
Issue:
While trying to use ECDSA host keys for OpenSSH, we noticed that parsing of ECDSA key fails. DSA and RSA key creation and parsing do not have this issue. Note that the ECDSA key was generated in FIPS mode and is being parsed in FIPS mode itself.
root@localhost:/home/admin#
openssl ec -in ssh_host_key_ecdsa -text -noout
read EC key
unable to load Key
140020611143360:error:10067066:elliptic curve routines:ec_GFp_simple_oct2point:invalid encoding:../../../../vendor/openssl-fips/crypto/ec/ecp_oct.c:370:
140020611143360:error:10092010:elliptic curve routines:d2i_ECPrivateKey:EC lib:../../../../vendor/openssl-fips/crypto/ec/ec_asn1.c:1172:
140020611143360:error:100D508E:elliptic curve routines:ECKEY_PRIV_DECODE:decode error:../../../../vendor/openssl-fips/crypto/ec/ec_ameth.c:256:
140020611143360:error:0606F091:digital envelope routines:EVP_PKCS82PKEY:private key decode error:../../../../vendor/openssl-fips/crypto/evp/evp_pkey.c:92:
140020611143360:error:0907B00D:PEM routines:PEM_READ_BIO_PRIVATEKEY:ASN1 lib:../../../../vendor/openssl-fips/crypto/pem/pem_pkey.c:142:
root@localhost:/home/admin#
A portion of the sample ECDSA key generated with curve secp384r1 via ssh-keygen with "ssh-keygen -t ecdsa -b 384 -f
ssh_host_key_ecdsa" is provided below:
-----BEGIN PRIVATE KEY-----
MIG2AgEAMBAGByqGSM49AgEGBSuBBAAiBIGeMIGbAgEBBDD
........
........
-----END PRIVATE KEY-----
A few questions related to this:
1) Is there a specific need to build the OpenSSL source only via the provided Makefile?
2) FIPS self test for ECDSA passes but the key creation/parsing fails. Could this indicate that the FIPS module APIs are not getting invoked in the case of ECDSA?
--
Thanks & Regards,
Shirisha.
