I'm the author of the book "Implementing SSL" (https://books.google.com/books?id=LfsC03f8oGsC&printsec=fron..., which covers a lot of the same ground as the link) and consider myself a crypto person - although I haven't had a chance to read every word and check through it with a fine tooth comb, based on what I've had a chance to review, it appears very accurate and very well laid out.
A nitpick: When discussing hash function properties (p. 111), his definition of property #1 ("[it should be hard to] modify a message without changing the hash") is, to me, equivalent to second-preimage resistance ("[Given] a message m, it should be difficult to find another message m' with the same hash"), which he discusses as a separate property under prop #3.
In the explanation of prop #1, he makes it clear that he is talking about the "avalanche effect," so it might be better to say that explicitly in the definition.
Disclaimer: I'm not a crypto person, so it's better if the author comments on this as well.
I think the book is great, by the way, especially the writing style and the choice of what to focus on. Thanks, lvh, for doing this.
