Wednesday, November 3, 2021

Difference between SHA1 and MD5 | Compare SHA1 and MD5



The secure hash algorithm (SHA) was developed by National Institute of Standards and Technology (NIST). It is based on MD4 algorithm. Based on different digest lengths, SHA includes algorithms such as SHA-1, SHA-256, SHA-384 and SHA-512. Unlike encryption, given a variable length message x, a secure hash algorithm computes a function H(x) which has a fixed bit. When a message of any length is less than 264 bits is input, the SHA-1 produces a 160-bit output called message digest.


MD 5

128-bit message digest developed by Ron Rivest. This algorithm takes the input length of arbitrary length and 128-bit message digest is produced. The input message is 512-bit blocks. Figure shows processing of message to produce message digest.


Difference between SHA-1 and MD 5

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