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In C, when you are finished using memory on the heap, you free() it which makes it available for use elsewhere. free() doesn't clear/wipe the memory to all zeros, so the next caller who asks for that memory will get the memory with its sensitive contents still intact unless you explicitly zero it before calling free(). Programs also often implement their own ...


The data they can recover will be data that has passed through openssls encryption/decryption and is therefore stored within the memory of openssl

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