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Saturday, 6 October 2012

Encryption And Decryption

10:33 pm

Encryption And Decryption

Encryption And Decryption:

1.      md5(string) : function used to encrypting the string to 32 bit hexa decimal format.
<?php
Echo strtoupper(md5(“india”));
?>
OutPut
       B4E12645C1CA6D4A5AD8EB1FE8ACE880
2.      sha1(string) : calculate the sha1 hash of a string.
3.      Crc32(string) : calculate the crc32 polynomial of a string.
<?php
Echo crc32("Inidia");
?>
OutPut:
955083134
4.      Crypt(string) : encodes the data as 34 character length with alpha numeric and special characters.
<?php
Echo crypt("India");
?>
OutPut :
$1$rW4.YU..$sRmZRxWrZ1g7QOa/VTl27/
5.      Base64_encode(string) :
6.      Base64_dencode(encrypted data)
<?php
$ecnode_data = base64_encode("India");
echo "encode data ".$ecnode_data."<br>";
$org_data = base64_decode($ecnode_data);
echo "decoded data ".$org_data;
?>
OutPut:
encode data SW5kaWE=
decoded data India

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