Go 1.26 Introduces Runtime/Secret Package for Automatic Memory Erasure to Prevent Secret Leaks
By
enz
A baker's-dozen of insight crammed into one ring.
Summary
Go 1.26 introduces a new runtime/secret package that enables 'secret mode' execution, where functions can run with automatic memory erasure. After a function completes, the system immediately zeroes out the registers and stack it used, while heap allocations are erased when the garbage collector determines they're no longer reachable. This feature helps prevent sensitive information from persisting in memory longer than necessary, reducing the risk of secret leaks to attackers.
Key quotes
· 4 pulledThe new runtime/secret package lets you run a function in secret mode. After the function finishes, it immediately erases (zeroes out) the registers and stack it used.
Heap allocations made by the function are erased as soon as the garbage collector decides they are no longer reachable.
This helps make sure sensitive information doesn't stay in memory longer than needed, lowering the risk of attackers getting to it.
Automatically erase used memory to prevent secret leaks.
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