The Php md5 () function uses RSA data security, including md5 message extraction and translation algorithm.
If it succeeds, the calculated MD5 hash is returned, and if it fails, false is returned.
The md5 () function calculates the MD5 hash of a string.
The md5 () function is used to calculate the MD5 hash of a string.
The md5 () function uses the MD5 message digest algorithm of RSA Data Security Company.
The md5 () function uses the data security encryption of American laboratory (famous for its research on encryption algorithm). It adopts MD5[ Message Digest] algorithm.
Message digest algorithm from RFC 132 1-MD5: The MD5 message digest algorithm takes messages of any length as input, and generates an output of 128-bit fingerprint or message digest with S as input. The MD5 algorithm is suitable for digital signature applications, in which large files must be compressed in a secure way before being encrypted with the private key under a public key cryptosystem (such as RSA).
RFC 132 1-MD5 message digest algorithm explains: "The MD5 message digest algorithm takes information of any length as the input value, converts it into a" fingerprint information "or" information hash "value with the length of 128 bits to represent the input value, and takes the converted value as the result. MD5 algorithm is mainly designed for "digital signature program"; In this "digital signature program", large files will be compressed in a secure way before encryption (the encryption process here is completed by setting a private key under the public key of a cryptographic system [such as RSA]).
On success, the function will return the calculated MD5 hash, and on failure, it will return FALSE.
If the function is executed successfully, the MD5 hash will be calculated, and if it fails, it will return false.