Guess that's not for SHA2_512? – stibay Jun 11 '15 at 8:31 @stibay PWDCOMPARE (and ultimately PWDENCRYPT ) are considered to be out of date now, the HASHBYTES function you are using is actually significantly better.

The Federal Information Processing Standard (FIPS 180-2) specifies four secure hash algorithms – SHA-1, SHA-256, SHA-384, and SHA-512 – all of which are iterative, one-way hash functions that can process a message with a maximum length of 2 64 – to 2 128 – bits to produce a 160- to 512-bit condensed representation called a message HMAC(Hash-based message authentication code) is a message authentication code that uses a cryptographic hash function such as SHA-256, SHA-512 and a secret key known as a cryptographic key. HMAC is more secure than any other authentication codes as it contains Hashing as well as MAC. SHA-512 is the same as SHA-256, however, it is 50% faster and uses a 64-bit platform, rather than a 32-bit platform. It uses more memory and more power. It uses more memory and more power. Currently, we list 6 cryptocurrencies for the SHA-512 algorithm. Guess that's not for SHA2_512? – stibay Jun 11 '15 at 8:31 @stibay PWDCOMPARE (and ultimately PWDENCRYPT ) are considered to be out of date now, the HASHBYTES function you are using is actually significantly better. If I do run ssh-add, my key gets added to the agent and everything appears to work. Then when I SSH to the remote host, I get: warning: agent returned different signature type ssh-rsa (expected rsa-sha2-512) and then I'm prompted for my password (not the key passphrase) and I can login to the remote host.

## What does SHA-512 actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

A keyed-hash message authentication code (HMAC) uses a cryptographic hash function (MD5, SHA-1, SHA-512 …) and a secret cryptographic key to verify both the data integrity and the authentication of a message. Binary decoder Variant Beaufort cipher Decimal to text Base32 to Hex Hex to Base32 SHA-512/256, with 512 bit hash values Among these, SHA-256 and SHA-512 are the most commonly accepted and used hash functions computed with 32-bit and 64-bit words, respectively. SHA-224 and SHA-384 are truncated versions of SHA-256 and SHA-512 respectively, computed with different initial values. SHA512/256 online hash function Input type SHA-3 (Secure Hash Algorithm 3) is the latest member of the Secure Hash Algorithm family of standards, released by NIST on August 5, 2015. Although part of the same series of standards, SHA-3 is internally different from the MD5-like structure of SHA-1 and SHA-2.

### SHA-512 The source code for the SHA-512 algorithm, also called SHA512. Within mbed TLS this module is referred to as SHA4 or SHA-4 as well. This source code is part of the mbed TLS library and represents the most current version in the trunk of the library.

The Federal Information Processing Standard (FIPS 180-2) specifies four secure hash algorithms – SHA-1, SHA-256, SHA-384, and SHA-512 – all of which are iterative, one-way hash functions that can process a message with a maximum length of 2 64 – to 2 128 – bits to produce a 160- to 512-bit condensed representation called a message HMAC(Hash-based message authentication code) is a message authentication code that uses a cryptographic hash function such as SHA-256, SHA-512 and a secret key known as a cryptographic key. HMAC is more secure than any other authentication codes as it contains Hashing as well as MAC. SHA-512 is the same as SHA-256, however, it is 50% faster and uses a 64-bit platform, rather than a 32-bit platform. It uses more memory and more power. It uses more memory and more power. Currently, we list 6 cryptocurrencies for the SHA-512 algorithm.