encryption 2 security 2 string-format 1 object-decryption 1 object-encryption 1 file-decryption 1 text-decryption 1 text-encryption 1 byte-decryption 1 byte-encryption 1 object-hashing 1 text-hashing 1 byte-hashing 1 null-terminator 1 null-byte 1 zero-byte 1 512-bit 1 8-bit 1 7-bit 1 AES-128 1 AES-192 1 Camellia 1 Camellia-128 1 Camellia-192 1 Camellia-256 1 CFB 1 OFB 1 asymmetric-encryption 1 public-key-encryption 1 asymmetric-ciphers 1 decryption-key 1 RIPEMD-320 1 openssl 1 substitution-permutation-network 1 advanced-encryption-standard 1 advanced-encryption 1 encryption-standard 1 two-way-encryption 1 symmetric-encryption 1 secret-key-encryption 1 symmetric-ciphers 1 secret-key 1 encryption-key 1 block-ciphers 1 initialization-vector 1 block-operation-mode 1 operation-mode 1 block-mode 1 block-size 1 key-size 1 iv-size 1 block-padding 1 padding-standard 1 zero-byte-padding 1 zero-padding 1 secure-padding 1 128-bit 1 160-bit 1 192-bit 1 224-bit 1 256-bit 1 384-bit 1 Triple-DES 1 TDES 1 three-pass-deletion 1 secure-file-erase 1 data-destruction 1 data-deletion 1 data-clearing 1 data-erasure 1 data-wiping 1 DOD-5220.22-M 1 cryptography-model 1 cryptography-hierarchy 1 cryptography-primitives 1 cryptographic-protocols 1 security-models 1 asymmetric-cryptography 1 authenticated-encryption 1 authentication 1 cryptography-and-data-security 1 digital-envelope 1 digital-signatures 1 key-exchange-protocol 1 php7 1 php8 1 random-number-generators 1 solid-principles 1 symmetric-key-cryptography 1 php-encryption 1 code-protection 1 key-generation 1 key-import 1 key-export 1 data-chunks 1 1024-bit 1 2048-bit 1 3072-bit 1 4096-bit 1 prime-numbers 1