FM / policies

/usr/share/crypto-policies/policies

Name	Size	Mode	Actions
modules/	-	0755	rm
DEFAULT.pol	2153	0644	edit dl rm
EMPTY.pol	267	0644	edit dl rm
FIPS.pol	1726	0644	edit dl rm
FUTURE.pol	2102	0644	edit dl rm
LEGACY.pol	2471	0644	edit dl rm

Edit: /usr/share/crypto-policies/policies/DEFAULT.pol (2153B)

# A reasonable default for today's standards. It should provide
# 112-bit security with the exception of SHA1 signatures needed for DNSSec
# and other still prevalent legacy use of SHA1 signatures.

# MACs: all HMAC with SHA1 or better + all modern MACs (Poly1305 etc)
# Curves: all prime >= 255 bits (including Bernstein curves)
# Signature algorithms: with SHA-1 hash or better (no DSA)
# TLS Ciphers: >= 128-bit key, >= 128-bit block (AES, ChaCha20, including AES-CBC)
# non-TLS Ciphers: as TLS Ciphers with added Camellia
# key exchange: ECDHE, RSA, DHE (no DHE-DSS)
# DH params size: >= 2048
# RSA params size: >= 2048
# TLS protocols: TLS >= 1.2, DTLS >= 1.2

mac = AEAD HMAC-SHA2-256 HMAC-SHA1 UMAC-128 HMAC-SHA2-384 HMAC-SHA2-512
mac@Kerberos = HMAC-SHA2-384 HMAC-SHA2-256 AEAD UMAC-128 HMAC-SHA2-512 HMAC-SHA1

group = X25519 X448 SECP256R1 SECP384R1 SECP521R1 \
    FFDHE-2048 FFDHE-3072 FFDHE-4096 FFDHE-6144 FFDHE-8192

hash = SHA2-256 SHA2-384 SHA2-512 SHA3-256 SHA3-384 SHA3-512 SHA2-224 SHA1

sign = ECDSA-SHA3-256 ECDSA-SHA2-256 \
       ECDSA-SHA3-384 ECDSA-SHA2-384 \
       ECDSA-SHA3-512 ECDSA-SHA2-512 \
       EDDSA-ED25519 EDDSA-ED448 \
       RSA-PSS-SHA2-256 RSA-PSS-SHA2-384 RSA-PSS-SHA2-512 \
       RSA-SHA3-256 RSA-SHA2-256 \
       RSA-SHA3-384 RSA-SHA2-384 \
       RSA-SHA3-512 RSA-SHA2-512 \
       ECDSA-SHA2-224 RSA-PSS-SHA2-224 RSA-SHA2-224 \
       ECDSA-SHA1 RSA-PSS-SHA1 RSA-SHA1

cipher = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 CAMELLIA-256-GCM \
    AES-256-CTR AES-256-CBC CAMELLIA-256-CBC AES-128-GCM AES-128-CCM \
    CAMELLIA-128-GCM AES-128-CTR AES-128-CBC CAMELLIA-128-CBC

cipher@TLS = AES-256-GCM AES-256-CCM CHACHA20-POLY1305 AES-256-CBC \
    AES-128-GCM AES-128-CCM AES-128-CBC

# 'RSA' is intentionally before DHE ciphersuites, as the DHE ciphersuites have
# interoperability issues in TLS.
key_exchange = ECDHE RSA DHE DHE-RSA PSK DHE-PSK ECDHE-PSK ECDHE-GSS DHE-GSS

protocol@TLS = TLS1.3 TLS1.2 DTLS1.2
protocol@IKE = IKEv2

# Parameter sizes
min_dh_size = 2048
min_dsa_size = 2048
min_rsa_size = 2048

# GnuTLS only for now
sha1_in_certs = 1

arbitrary_dh_groups = 1
ssh_certs = 1
ssh_etm = 1

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