/usr/share/crypto-policies/FIPS
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Edit: /usr/share/crypto-policies/FIPS/nss.txt (368B)
library= name=Policy NSS=flags=policyOnly,moduleDB config="disallow=ALL allow=HMAC-SHA256:HMAC-SHA1:HMAC-SHA384:HMAC-SHA512:SECP256R1:SECP384R1:SECP521R1:aes256-gcm:aes256-cbc:aes128-gcm:aes128-cbc:SHA256:SHA384:SHA512:SHA224:ECDHE-RSA:ECDHE-ECDSA:DHE-RSA:ECDSA:RSA-PSS:RSA-PKCS:tls-version-min=tls1.2:dtls-version-min=dtls1.2:DH-MIN=2048:DSA-MIN=2048:RSA-MIN=2048"