ECB and CTR cryptographically secure pseudorandom number generators

i uh... ECB??? cryptographically secure????

ECB?!?!

@dysfun I expect a competently-written cryptographic library to detect the attempted use of ECB and electrocute the author.
@RogerBW a competently written cryptographic library would simply not offer ECB.
@dysfun Well, that too, but let's start with what we'd _like_.