When implementing cryptographic primitives, you want to avoid branching on secret values. The reason why is that the CPU's branch predictor will attempt to predict the value that you're branching on, and thus something…
Cmov doesn't branch. A branch refers specifically to the program counter ending up in more than one possible place after an instruction has executed. It is this behavior that mucks with the CPU state and slows…
cmov (i.e. conditional move) doesn't branch. By branch here, we mean "at point at which the successor program counter value might be one of two locations." It's true that this _does_ have security implications, however…
When implementing cryptographic primitives, you want to avoid branching on secret values. The reason why is that the CPU's branch predictor will attempt to predict the value that you're branching on, and thus something…
Cmov doesn't branch. A branch refers specifically to the program counter ending up in more than one possible place after an instruction has executed. It is this behavior that mucks with the CPU state and slows…
cmov (i.e. conditional move) doesn't branch. By branch here, we mean "at point at which the successor program counter value might be one of two locations." It's true that this _does_ have security implications, however…