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ALGORITHMS.md

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Algorithms

Algorithm Purpose OTP 17 OTP 18 OTP 19 Fallback Definition
AES CBC 128-bit Encryption X X X jose_jwa_aes NIST.800-38A
AES CBC 192-bit Encryption X jose_jwa_aes NIST.800-38A
AES CBC 256-bit Encryption X X X jose_jwa_aes NIST.800-38A
AES CTR 128-bit Encryption X X X NIST.800-38A
AES CTR 192-bit Encryption X X X NIST.800-38A
AES CTR 256-bit Encryption X X X NIST.800-38A
AES ECB 128-bit Encryption X X jose_jwa_aes NIST.800-38A
AES ECB 192-bit Encryption X jose_jwa_aes NIST.800-38A
AES ECB 256-bit Encryption X X jose_jwa_aes NIST.800-38A
AES GCM 128-bit Encryption X X jose_jwa_aes NIST.800-38D
AES GCM 192-bit Encryption X X jose_jwa_aes NIST.800-38D
AES GCM 256-bit Encryption X X jose_jwa_aes NIST.800-38D
ChaCha20/Poly1305 Encryption jose_jwa_chacha20_poly1305 RFC 7539
RSAES-OAEP Encryption X X X jose_jwa_pkcs1 RFC 3447
RSAES-OAEP-256 Encryption jose_jwa_pkcs1 RFC 3447
RSAES-PKCS1-v1_5 Encryption X X X jose_jwa_pkcs1 RFC 3447
RSASSA-PKCS1-v1_5 Signature X X X jose_jwa_pkcs1 RFC 3447
RSASSA-PSS Signature jose_jwa_pkcs1 RFC 3447

There are also several "helper" algorithms used with the above that have no native implementations currently in OTP:

Algorithm Purpose Fallback Definition
AES Key Wrap Key Wrap jose_jwa_aes_kw RFC 3394
Concat KDF Key Derivation jose_jwa_concat_kdf NIST.800-56A
MGF1 Mask Generation jose_jwa_pkcs1 RFC 3447
PBKDF1 Key Derivation jose_jwa_pkcs5 RFC 2898
PBKDF2 Key Derivation jose_jwa_pkcs5 RFC 2898
PKCS #7 Padding Padding jose_jwa_pkcs7 RFC 2315

The following are algorithms related to the draft CFRG ECDH and signatures in JOSE:

Algorithm Purpose External Fallback Definition
Ed25519 Signature libdecaf, libsodium jose_jwa_curve25519 EdDSA
Ed25519ph Signature libdecaf, libsodium jose_jwa_curve25519 EdDSA
Ed448 Signature libdecaf jose_jwa_curve448 EdDSA
Ed448ph Signature libdecaf jose_jwa_curve448 EdDSA
SHAKE256 Hash keccakf1600, libdecaf jose_jwa_sha3 FIPS 202
X25519 Key Exchange libsodium jose_jwa_curve25519 RFC 7748
X448 Key Exchange libdecaf jose_jwa_curve448 RFC 7748