On 01/07/2021 07:21, vinod mg wrote:
1) Supress or a way to remove secp521r1 from the currenlty installed
openssl.
You can specify the list of groups by calling SSL_CTX_set1_groups_list
(or SSL_set1_groups_list) from your application. See:
https://www.openssl.org/docs/man1.1.1/man3/SSL_CTX_set1_groups_list.html
2) Add the cipher - "0xbaba TLS_GREASE_BA GREASE" like we see in
chrome.
This is not a real cipher. It does nothing and is always ignored.
OpenSSL does not support sending this value.
Matt
I am ok with custom install as well, if above cannot be done with
already installed openssl package. Please share any wiki I can
follow to impliment the same.
~]# openssl ecparam -list_curves
secp224r1 : NIST/SECG curve over a 224 bit prime field
secp256k1 : SECG curve over a 256 bit prime field
secp384r1 : NIST/SECG curve over a 384 bit prime field
/secp521r1 : NIST/SECG curve over a 521 bit prime field/
prime256v1: X9.62/SECG curve over a 256 bit prime field
I am using below OS and version-
# cat /etc/redhat-release
Red Hat Enterprise Linux release 8.3 (Ootpa)
# opensslversion -a
OpenSSL 1.1.1g FIPS21 Apr 2020
built on: Thu Mar 25 16:46:53 2021 UTC
platform: linux-x86_64
options:bn(64,64) md2(char) rc4(16x,int) des(int) idea(int)
blowfish(ptr)
compiler: gcc -fPIC -pthread -m64 -Wa,--noexecstack -Wall -O3 -O2 -g
-pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
-Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong
-grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection
-fcf-protection -Wa,--noexecstack
-Wa,--generate-missing-build-notes=yes
-specs=/usr/lib/rpm/redhat/redhat-hardened-ld -DOPENSSL_USE_NODELETE
-DL_ENDIAN -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_IA32_SSE2
-DOPENSSL_BN_ASM_MONT -DOPENSSL_BN_ASM_MONT5 -DOPENSSL_BN_ASM_GF2m
-DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DRC4_ASM
-DMD5_ASM -DAESNI_ASM -DVPAES_ASM -DGHASH_ASM -DECP_NISTZ256_ASM
-DX25519_ASM -DPOLY1305_ASM -DZLIB -DNDEBUG -DPURIFY
-DDEVRANDOM="\"/dev/urandom\""
-DSYSTEM_CIPHERS_FILE="/etc/crypto-policies/back-ends/openssl.config"
OPENSSLDIR: "/etc/pki/tls"
ENGINESDIR: "/usr/lib64/engines-1.1"
Seeding source: os-specific
engines:rdrand dynamic
Really appriciate your time and help, thanks in advance.
Thanks,
Vinod
