# Where should I start to learn cryptography? [duplicate]

I want to learn cryptography. I just wanted to ask people who are experienced about the field where I should start. Any recommendation would be something for me.

## marked as duplicate by Ella Rose♦, e-sushiSep 3 '18 at 15:13

• Have to agree with @Patriot re. discouragement. Other than appreciating that $2^{128}$ = boiling of all Earth's lakes, I see no need for maths. Maybe a wee bit of $log(choices)$ to determine entropy content, but only if we truly understand $choices$. The Zeitgeist says that we mustn't "roll our own", therefore all that remains is selection and implementation of "approved" crypto schemes. Is anyone here sufficiently competent to produce a curve that Wall Street will standardise on? What use finite fields with BouncyCastle? Ergo, no maths. – Paul Uszak Jul 27 at 3:05