Recommended hash pairings (not enforced by JPGPJ; Bouncy Castle fails at runtime if invalid): RSA / DSA: SHA-256 or SHA-512 ECDSA (NIST P-256): SHA-256; P-384: SHA-384; P-521: SHA-512 Ed25519: SHA-512 ...
Null character: The null character U+0000 is encoded as a 2-byte sequence 0xC0 0x80 instead of the single byte 0x00. Supplementary characters: Characters whose code points are above U+FFFF are encoded ...