block_length

        # OpenSSL::Digest.block_length

(from ruby core)
### Implementation from Digest
---
    digest.block_length -> integer

---

Returns the block length of the digest algorithm, i.e. the length in
bytes of an individual block. Most modern algorithms partition a message
to be digested into a sequence of fix-sized blocks that are processed
consecutively.

### Example
    digest = OpenSSL::Digest.new('SHA1')
    puts digest.block_length # => 64