2007-11-14 2026-03-06 1-32767 Specification Required 32768-65535 Private Use David McGrew, Bjoern Tackmann, Stanislav Smyshlyaev 1 AEAD_AES_128_GCM 2 AEAD_AES_256_GCM 3 AEAD_AES_128_CCM 4 AEAD_AES_256_CCM 5 AEAD_AES_128_GCM_8 6 AEAD_AES_256_GCM_8 7 AEAD_AES_128_GCM_12 8 AEAD_AES_256_GCM_12 9 AEAD_AES_128_CCM_SHORT 10 AEAD_AES_256_CCM_SHORT 11 AEAD_AES_128_CCM_SHORT_8 12 AEAD_AES_256_CCM_SHORT_8 13 AEAD_AES_128_CCM_SHORT_12 14 AEAD_AES_256_CCM_SHORT_12 15 AEAD_AES_SIV_CMAC_256 16 AEAD_AES_SIV_CMAC_384 17 AEAD_AES_SIV_CMAC_512 18 AEAD_AES_128_CCM_8 19 AEAD_AES_256_CCM_8 20 AEAD_AES_128_OCB_TAGLEN128 RFC7253, Section 3.1 21 AEAD_AES_128_OCB_TAGLEN96 RFC7253, Section 3.1 22 AEAD_AES_128_OCB_TAGLEN64 RFC7253, Section 3.1 23 AEAD_AES_192_OCB_TAGLEN128 RFC7253, Section 3.1 24 AEAD_AES_192_OCB_TAGLEN96 RFC7253, Section 3.1 25 AEAD_AES_192_OCB_TAGLEN64 RFC7253, Section 3.1 26 AEAD_AES_256_OCB_TAGLEN128 RFC7253, Section 3.1 27 AEAD_AES_256_OCB_TAGLEN96 RFC7253, Section 3.1 28 AEAD_AES_256_OCB_TAGLEN64 RFC7253, Section 3.1 29 AEAD_CHACHA20_POLY1305 30 AEAD_AES_128_GCM_SIV 31 AEAD_AES_256_GCM_SIV 32 AEAD_AEGIS128L 33 AEAD_AEGIS256 34 AEAD_AEGIS128X2 35 AEAD_AEGIS128X4 36 AEAD_AEGIS256X2 37 AEAD_AEGIS256X4 38-32767 Unassigned 32768-65535 Reserved for Private Use