Oberon PSA Crypto supports the following cryptographic algorithms, conforming to the relevant parts of the PSA Certified Crypto API specification:

Message digests (hashes)

• SHA1
• SHA2 (224, 256, 384, 512)
• SHA3 (224, 256, 384, 512)
• SHAKE256-512

Message authentication codes (MAC)

• HMAC
• AES-CMAC 

Unauthenticated ciphers

• ChaCha20
• AES CTR / ECB no padding / CBC no padding / CBC PKCS7 / CCM* tag / KW / KWP

Authenticated encryption with associated data (AEAD)

• AES CCM / GCM
• ChaCha20-Poly1305

Key derivation

• HKDF / HKDF extract / HKDF expand
• PBKDF2-HMAC
• PBKDF2-CMAC-PRF128
• TLS-1.2 PRF
• TLS-1.2 PSK-to-Mastersecret
• NIST SP 800-108 counter-mode KDF (CMAC, HMAC)

Asymmetric signature

• RSASSA PKCS-v1.5 sign / PSS
• ECDSA / deterministic ECDSA (P-224, P-256, P-384, P-521, secp256k1)
• EdDSA (Ed25519, Ed448)
• LMS / HSS (signature verification, SHA256, SHAKE256)
• XMSS / XMSS^MT (signature verification, SHA256, SHAKE256)

Asymmetric encryption

• RSAES PKCS-v1.5 crypt / OAEP

Key agreement

• ECDH (P-224, P-256, P-384, P-521)
• ECDH (X25519, X448)

Password-authenticated key exchange (PAKE)

• EC-JPAKE (P-256)
• SPAKE2+ (P-256, HMAC)
• SRP-6 (SHA512)

Random number generation

• CTR-DRBG
• HMAC-DRBG

The following cryptographic key sizes are supported:

• AES: 128, 192, and 256 bit keys are supported for all uses of AES, except for PBKDF2-AES-CMAC-PRF128 which uses 128 bit keys.
• RSA: 1, 1.5, 2, 3, 4, 6, and 8 kbit keys are supported for all uses of RSA.
• NIST curves: P-224 (aka secp224r1), P-256 (aka secp256r1) and P-384 (aka secp384r1) support 224/256/384 bit keys.
• Twisted Edwards curves: Ed25519 supports 255 bit keys.
• Montgomery curves: X25519 supports 255 bit keys.
• SRP-6: 3072 bit keys are supported.