Replacement cipher: Let τ be a permutation of the alphabet, and apply τ to each letter of the message. Frequency analysis is useful for breaking this type of code. Decode the following, which was encoded using a replacement cipher.
MIZVN KXXHA XRRTK NXYEX QIZVI IZXWM NXYGT JWVHC YTOXX QNHTI JYTWV NMHUR XOYLN ZTJTE XYAZX RWMHU XEMRK LIJYT WNWVR REXPV IMTHN OTHIM HLVRR GYXCX VIXQ --- NVWLX RBTZH NTH
I have made a frequency table of the occurrence of each letter in the above code.
X-18 T-12 H-10 N-10 R-10 I-9 V-9 Y-8 M-7 W-7 Z-6 E-4 J-4 L-4 K-3 O-3 Q-3 A-2 C-2 G-2 U-2 B-1 P-1 D-0 F-0 S-0
Comparing this with the frequency of letters occurring in English leads me to believe that X corresponds with E and that T corresponds with T. However this is where I get stuck.
I understand you are looking to solve this yourself, but I have added the spoiler here as a check for when you have a final answer. I will edit in some pointers if I get time soon.