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Docs, code cleanup, and protect the extra new fields of HELLO with encryption as a precaution.

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This commit is contained in:
Adam Ierymenko 2017-02-05 16:19:03 -08:00
parent 594cb1fad8
commit 43182f8f57
13 changed files with 163 additions and 116 deletions
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6
node/Identity.cpp
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@ -46,7 +46,7 @@ static inline void _computeMemoryHardHash(const void *publicKey,unsigned int pub
// but is not what we want for sequential memory-harndess.
memset(genmem,0,ZT_IDENTITY_GEN_MEMORY);
Salsa20 s20(digest,256,(char *)digest + 32);
s20.encrypt20((char *)genmem,(char *)genmem,64);
s20.crypt20((char *)genmem,(char *)genmem,64);
for(unsigned long i=64;i<ZT_IDENTITY_GEN_MEMORY;i+=64) {
unsigned long k = i - 64;
*((uint64_t *)((char *)genmem + i)) = *((uint64_t *)((char *)genmem + k));
@ -57,7 +57,7 @@ static inline void _computeMemoryHardHash(const void *publicKey,unsigned int pub
*((uint64_t *)((char *)genmem + i + 40)) = *((uint64_t *)((char *)genmem + k + 40));
*((uint64_t *)((char *)genmem + i + 48)) = *((uint64_t *)((char *)genmem + k + 48));
*((uint64_t *)((char *)genmem + i + 56)) = *((uint64_t *)((char *)genmem + k + 56));
s20.encrypt20((char *)genmem + i,(char *)genmem + i,64);
s20.crypt20((char *)genmem + i,(char *)genmem + i,64);
}
// Render final digest using genmem as a lookup table
@ -67,7 +67,7 @@ static inline void _computeMemoryHardHash(const void *publicKey,unsigned int pub
uint64_t tmp = ((uint64_t *)genmem)[idx2];
((uint64_t *)genmem)[idx2] = ((uint64_t *)digest)[idx1];
((uint64_t *)digest)[idx1] = tmp;
s20.encrypt20(digest,digest,64);
s20.crypt20(digest,digest,64);
}
}