语法: digest = ngx.sha1_bin(str)
环境: set_by_lua, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.**
通过 SHA-1 计算 str 字符串返回二进制的数据。
在安装 Nginx 时 这个函数需要 SHA-1 的支持。（这通常说明应该在安装 Nginx 时一起安装 OpenSSL 库）。
这个方法在 v0.5.0rc6 版本中首次引入。
English source:
syntax: digest = ngx.sha1_bin(str)
context: set_by_lua, rewrite_by_lua*, access_by_lua*, content_by_lua*, header_filter_by_lua*, body_filter_by_lua*, log_by_lua*, ngx.timer.**
Returns the binary form of the SHA-1 digest of the str argument.
This function requires SHA-1 support in the Nginx build. (This usually just means OpenSSL should be installed while building Nginx).
This function was first introduced in the v0.5.0rc6.