php security cryptography encryption aes aead php-library sodium curve25519 x25519 poly1305 decryption chacha20 public-key-cryptography stream-cipher block-cipher asymmetric-cryptography symmetric-cryptography xchacha20 secret-key-cryptography

php security cryptography siphash libsodium sodium ed25519 curve25519 x25519 cryptography-library blake2b php-polyfill xsalsa20poly1305 xchacha20-poly1305 sodium-compat

php composer cryptography encryption authentication php7 argon2 siphash libsodium ed25519 curve25519 digital-signature x25519 cryptography-library easy-to-use xsalsa20 poly1305 blake2b misuse-resistant