Key and core with cam blocking

A lock core having a first end and a second end opposite the first end in combination with a key, the key comprising a shank and a bow, the shank having a first end tip opposite the bow, the combination comprising:

• a shell;
• a plug positioned within and rotatable relative to the shell between a first position and a second position about a longitudinal axis of the plug, the plug comprising a keyway wherein the shank of the key is insertable into the keyway;
• and
• a lock, the lock having a first locked position preventing rotation of the plug relative to the shell, an unlocked position allowing rotation of the plug relative to the shell and a second locked position different from the first locked position preventing rotation of the plug relative to the shell, the lock moveable from the first locked position preventing rotation of the plug relative to the shell to the unlocked position with a first movement of the lock, the first movement having a vector component along the longitudinal axis of the plug and a vector component along an axis transverse to the longitudinal axis of the plug;
• wherein the plug comprises a lock passage and the lock core comprises a lock actuator assembly, the lock actuator assembly comprising a block and a spring positioned within the lock passage of the plug and longitudinally aligned, wherein the spring supplies a biasing force to the block to bias the lock to the first locked position by biasing the block along a first direction to a first position within the lock passage;
• and
• wherein the lock comprises a rocker rotatable about a first axis between the first locked position, the unlocked position, and the second locked position, and the rocker is coupled to the block of the lock actuator, wherein the rocker is sequentially rotatable about the first axis between the first locked position preventing rotation of the plug relative to the shell due to the block being in the first position within the lock passage, the unlocked position allowing rotation of the plug relative to the shell due to the block being translated in a second direction opposite the first direction to a second position within the lock passage, and the second locked position preventing rotation of the plug relative to the shell due to the block being translated in the second direction to a third position within the lock passage, wherein the block is translatable along the second direction from the first position to the second position due to a first advancement of the key into a keyway of the plug and the block is translatable along the second direction from the second position to the third position due to a second advancement of the key into the keyway of the plug, the first end tip of the shank of the key extends longitudinally past the rocker towards the second end of the lock core when the block is in the third position.