context type - opaque

buffer type

digest type - opaque

The zero digest

Create a new context

Sha256.unsafe_update_substring ctx s ofs len updates the context with the substring of s starting at character number ofs and containing len characters. Unsafe: No range checking!

Sha256.update_substring ctx s ofs len updates the context with the substring of s starting at character number ofs and containing len characters.

Sha256.update_string ctx s updates the context with s.

Sha256.update_buffer ctx a updates the context with a. Runs parallel to other threads if any exist.

Finalize the context and return digest

Return an copy of the context

Return the digest of the given string.

Sha256.substring s ofs len returns the digest of the substring of s starting at character number ofs and containing len characters.

Return the digest of the given buffer.

If len is nonnegative, Sha256.channel ic len reads len characters from channel ic and returns their digest, or raises End_of_file if end-of-file is reached before len characters are read. If len is negative, Sha256.channel ic len reads all characters from ic until end-of-file is reached and return their digest.

Return the digest of the file whose name is given.

Return the digest of the file whose name is given using fast C function

Write a digest on the given output channel.

Read a digest from the given input channel.

return a binary representation of the given digest

return a printable hexadecimal representation of the given digest