sha-512 generator
SHA-512 returns a 512-bit digest as 128 hexadecimal characters, twice the size of SHA-256. Here you calculate the digest and see why this SHA-2 variant uses 64-bit internal words instead of 32-bit ones.
The FIPS 180-4 value for an empty input: 128 hexadecimal characters even with zero bytes of content.
The same "abc" test vector used to validate SHA-1 and SHA-256, here with an output twice as long because SHA-512's internal state has twice the bits.
Compare it with the SHA-256 of the same text: the result has exactly twice the characters, 128 versus 64, reflecting 512 output bits against 256.
Yes. Text, files and HMAC secrets are processed directly in the browser without any upload.
Not in a way that matters in practice: neither has a known collision, and SHA-256's search space, 2 raised to 256, is already far beyond what any brute-force attack can reach today. SHA-512's advantage is 64-bit performance, not extra security.
Because the raw output is 512 bits, and each hexadecimal character represents 4 bits: 512 divided by 4 is exactly 128 characters. That is twice SHA-256, which has a 256-bit output and 64 characters.
Not as a final solution. Even with a 64-bit internal state, it is still a fast hash with no built-in salt; the standard for passwords is bcrypt, scrypt, or Argon2, deliberately built to be slow.
—Digest SHA-2 maior, útil em checksums e fluxos que pedem 512 bits.
Text, files and secrets are processed locally. Nothing is sent to the server.