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DEFAULT.pol	2.55 MB	View DL Edit
EMPTY.pol	277 B	View DL Edit
FIPS.pol	2.12 MB	View DL Edit
FUTURE.pol	2.56 MB	View DL Edit
LEGACY.pol	2.71 MB	View DL Edit

Edit file: /usr/share/crypto-policies/policies/DEFAULT.pol

# A reasonable default for today's standards.
# It should provide 112-bit security.
# SHA1 is allowed in HMAC where collision resistance does not matter.

# MACs: all HMAC with SHA1 or better + all modern MACs (Poly1305 etc)
# Curves: all prime >= 255 bits (including Bernstein curves)
# Signature algorithms: with SHA-224 hash or better (no DSA)
# Ciphers: >= 128-bit key, >= 128-bit block (AES, ChaCha20)
# 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 SECP256R1 X448 SECP521R1 SECP384R1 \
        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 SHA3-224 \
       SHAKE-256
hash@RPM = SHA1+

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

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

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

cipher@RPM = AES-256-CFB AES-256-GCM AES-256-OCB AES-256-EAX \
    AES-128-CFB AES-128-GCM AES-128-OCB AES-128-EAX

# CBC ciphers in SSH are considered vulnerable to plaintext recovery attacks
# and disabled in client OpenSSH 7.6 (2017) and server OpenSSH 6.7 (2014).
cipher@SSH = -*-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 RSA-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  # DSA is disabled
min_rsa_size = 2048

# GnuTLS only for now
sha1_in_certs = 0

arbitrary_dh_groups = 1
ssh_certs = 1
etm@SSH = ANY

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