如何在 PHP 中生成随机 64 位值作为十进制字符串

2021-12-21 00:00:00 oauth random php arbitrary-precision

Oauth 需要一个随机的 64 位无符号数字，编码为十进制格式的 ASCII 字符串.你们能帮我用php实现这个吗?谢谢

Oauth requires a random 64-bit, unsigned number encoded as an ASCII string in decimal format. Can you guys help me achieve this with php? Thanks

推荐答案

你可以使用两个 32 位数字、四个 16 位数字等.

You could use two 32-bit numbers, four 16-bit numbers, etc.

PHP 有 rand() 和 mt_rand() 但是标准没有指定它们提供多少随机位(尽管它们可以借助 getrandmax() 和 mt_getrandmax()，分别.)

PHP has rand() and and mt_rand() but how many random bits they supply isn't specified by the standard (though they can be queried with the help of getrandmax() and mt_getrandmax(), respectively.)

因此，您~~最安全~~最简单的方法是生成 64 个随机位并一一设置.

So your ~~safest~~ simplest bet would be generating 64 random bits and setting them one by one.

至于使用 64 位整数，我建议使用 GMP 库，因为它有很多功能可以帮助您.

As for working with 64-bit integers, I'd recommend using the GMP library as it has a good range of functions to help you out.

您可以创建一个数字，调用 64 gmp_setbit()s 在它的连续位置上，然后使用 gmp_strval() 将其转换为字符串.

You could create a number, call 64 gmp_setbit()s on it with successive positions then convert it to a string using gmp_strval().

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