[Mono-dev] Help Finding this Function?

Edward Ned Harvey (mono) edward.harvey.mono at clevertrove.com
Thu Jun 26 14:11:13 UTC 2014

I wanted to understand where mono RNGCryptoServiceProvider gets random data.  So I read its source, I see it uses "extern RngInitialize," so when I search for "RngInitialize," it leads me to "ves_icall_System_Security_Cryptography_RNGCryptoServiceProvider_RngInitialize" in rand.c

When I read rand.c, I see that it uses CryptAcquireContext.  (First tries to use Intel PIII RNG, and falls back to RSA CSP).  But I can't seem to find the definition for CryptAcquireContext.  Anybody help?

I search the entire source tree for CryptAcquireContext:
	$ grep -lr CryptAcquireContext .

I suppose CapiContext.cs and CryptoAPI.cs get built to make Mono.Security.Win32.dll.  So that explains having the phrase "CryptAcquireContext" in all 5 of those files ...  But none of them, as far as I can tell, supply the definition for the function called in rand.c.  Looking in CapiContext.cs and CryptoAPI.cs, I see they both contain the phrase "CryptAcquireContextA" which does not appear to be the same thing as "CryptAcquireContext" which is called by rand.c

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